Hello. 
I have archer mr505 and I use it to share internet access through SIM card (4g mode). 
I have problems with connection especially at night time.

Next day when I woke up devices has Wi-Fi connection but there is no internet access.

When I logged into router there is no issues, internet status is connected, signal strength is 100%.

IPv4 address is assigned (it is not 0.0.0.0).

No issues at all but internet does not work... 

 

The only way to regain Internet access is to restart the router.

 

SIM card works fine, checked on phone. 
I have tried change router connection settings to 4g only but it did not help. 

 

Log file below. Any time when I lost connection the log file looks similar. 
 

##########################################################################
#                    Archer MR505  System Log 
# Time = 2025-01-26 10:18:03 6634s
# H-Ver = Archer MR505 1.0 : S-Ver = 1.13.1 Build 240205 Rel.59931n(4555)
# L = 192.168.1.1 : M = 255.255.255.0
# WAN = DHCP : W = 0.0.0.0 : M = 0.0.0.0 : G = 0.0.0.0
# Cnt = 10624, Free = 10592, Busy = 32
##########################################################################

1 ERROR 0days, 01:42:47, [cwmp]parse url info fail

2 INFO 0days, 01:42:52, [wan]ipv6 mobile link status is down or dns is NULL

3 ERROR 0days, 01:42:58, [cwmp]hostGetByName "" unsuccessfully.

4 ERROR 0days, 01:42:58, [cwmp]parse url info fail

5 INFO 0days, 01:43:12, [wan]ipv6 mobile link status is down or dns is NULL

6 ERROR 0days, 01:43:28, [cwmp]hostGetByName "" unsuccessfully.

7 ERROR 0days, 01:43:28, [cwmp]parse url info fail

8 INFO 0days, 01:43:32, [wan]ipv6 mobile link status is down or dns is NULL

9 ERROR 0days, 01:43:52, [cwmp]hostGetByName "" unsuccessfully.

10 ERROR 0days, 01:43:52, [cwmp]parse url info fail

11 INFO 0days, 01:43:52, [wan]ipv6 mobile link status is down or dns is NULL

12 ERROR 0days, 01:43:58, [cwmp]hostGetByName "" unsuccessfully.

13 ERROR 0days, 01:43:58, [cwmp]parse url info fail

14 ERROR 0days, 01:44:06, [cwmp]hostGetByName "" unsuccessfully.

15 ERROR 0days, 01:44:06, [cwmp]parse url info fail

16 INFO 0days, 01:44:12, [wan]ipv6 mobile link status is down or dns is NULL

17 ERROR 0days, 01:44:21, [cwmp]hostGetByName "" unsuccessfully.

18 ERROR 0days, 01:44:21, [cwmp]parse url info fail

19 INFO 0days, 01:44:32, [wan]ipv6 mobile link status is down or dns is NULL

20 ERROR 0days, 01:44:35, [cwmp]hostGetByName "" unsuccessfully.

21 ERROR 0days, 01:44:35, [cwmp]parse url info fail

22 INFO 0days, 01:44:52, [wan]ipv6 mobile link status is down or dns is NULL

23 ERROR 0days, 01:45:05, [cwmp]hostGetByName "" unsuccessfully.

24 ERROR 0days, 01:45:05, [cwmp]parse url info fail

25 INFO 0days, 01:45:12, [wan]ipv6 mobile link status is down or dns is NULL

26 ERROR 0days, 01:45:21, [cwmp]hostGetByName "" unsuccessfully.

27 ERROR 0days, 01:45:21, [cwmp]parse url info fail

28 INFO 0days, 01:45:32, [wan]ipv6 mobile link status is down or dns is NULL

29 ERROR 0days, 01:45:33, [cwmp]hostGetByName "" unsuccessfully.

30 ERROR 0days, 01:45:33, [cwmp]parse url info fail

31 ERROR 0days, 01:45:47, [cwmp]hostGetByName "" unsuccessfully.

32 ERROR 0days, 01:45:47, [cwmp]parse url info fail

33 INFO 0days, 01:45:52, [wan]ipv6 mobile link status is down or dns is NULL

34 INFO 0days, 01:46:12, [wan]ipv6 mobile link status is down or dns is NULL

35 ERROR 0days, 01:46:15, [cwmp]hostGetByName "" unsuccessfully.

36 ERROR 0days, 01:46:15, [cwmp]parse url info fail

37 ERROR 0days, 01:46:26, [cwmp]hostGetByName "" unsuccessfully.

38 ERROR 0days, 01:46:26, [cwmp]parse url info fail

39 ERROR 0days, 01:46:29, [cwmp]hostGetByName "" unsuccessfully.

40 ERROR 0days, 01:46:29, [cwmp]parse url info fail

41 INFO 0days, 01:46:32, [wan]ipv6 mobile link status is down or dns is NULL

42 INFO 0days, 01:46:52, [wan]ipv6 mobile link status is down or dns is NULL

43 ERROR 0days, 01:46:59, [cwmp]hostGetByName "" unsuccessfully.

44 ERROR 0days, 01:46:59, [cwmp]parse url info fail

45 ERROR 0days, 01:47:02, [cwmp]hostGetByName "" unsuccessfully.

46 ERROR 0days, 01:47:02, [cwmp]parse url info fail

47 INFO 0days, 01:47:12, [wan]ipv6 mobile link status is down or dns is NULL

48 ERROR 0days, 01:47:19, [cwmp]hostGetByName "" unsuccessfully.

49 ERROR 0days, 01:47:19, [cwmp]parse url info fail

50 INFO 0days, 01:47:32, [wan]ipv6 mobile link status is down or dns is NULL

51 ERROR 0days, 01:47:35, [cwmp]hostGetByName "" unsuccessfully.

52 ERROR 0days, 01:47:35, [cwmp]parse url info fail

53 INFO 0days, 01:47:52, [wan]ipv6 mobile link status is down or dns is NULL

54 ERROR 0days, 01:48:01, [cwmp]hostGetByName "" unsuccessfully.

55 ERROR 0days, 01:48:01, [cwmp]parse url info fail

56 INFO 0days, 01:48:12, [wan]ipv6 mobile link status is down or dns is NULL

57 ERROR 0days, 01:48:27, [cwmp]hostGetByName "" unsuccessfully.

58 ERROR 0days, 01:48:27, [cwmp]parse url info fail

59 INFO 0days, 01:48:32, [wan]ipv6 mobile link status is down or dns is NULL

60 ERROR 0days, 01:48:51, [cwmp]hostGetByName "" unsuccessfully.

61 ERROR 0days, 01:48:51, [cwmp]parse url info fail

62 INFO 0days, 01:48:52, [wan]ipv6 mobile link status is down or dns is NULL

63 INFO 0days, 01:49:12, [wan]ipv6 mobile link status is down or dns is NULL

64 ERROR 0days, 01:49:15, [cwmp]hostGetByName "" unsuccessfully.

65 ERROR 0days, 01:49:15, [cwmp]parse url info fail

66 INFO 0days, 01:49:32, [wan]ipv6 mobile link status is down or dns is NULL

67 ERROR 0days, 01:49:44, [cwmp]hostGetByName "" unsuccessfully.

68 ERROR 0days, 01:49:44, [cwmp]parse url info fail

69 INFO 0days, 01:49:52, [wan]ipv6 mobile link status is down or dns is NULL

70 ERROR 0days, 01:49:54, [cwmp]hostGetByName "" unsuccessfully.

71 ERROR 0days, 01:49:54, [cwmp]parse url info fail

72 ERROR 0days, 01:50:05, [cwmp]hostGetByName "" unsuccessfully.

73 ERROR 0days, 01:50:05, [cwmp]parse url info fail

74 ERROR 0days, 01:50:08, [cwmp]hostGetByName "" unsuccessfully.

75 ERROR 0days, 01:50:08, [cwmp]parse url info fail

76 ERROR 0days, 01:50:09, [cwmp]hostGetByName "" unsuccessfully.

77 ERROR 0days, 01:50:09, [cwmp]parse url info fail

78 INFO 0days, 01:50:12, [wan]ipv6 mobile link status is down or dns is NULL