Hi  @mitkodi 

Here's an analysis and possible solutions for the problem you're facing with the EAP650:

**Possible Causes**

1. **Interference or Signal Issues** -

Although you mentioned that it doesn't seem to depend on the number of connected devices, interference from other wireless networks or physical obstacles could still be a factor. - Poor signal quality might cause the clients to establish a connection with the AP, but the connection is not stable enough for proper data transmission. This could be due to issues such as electromagnetic interference from other electronics, thick walls, or other wireless devices operating in the same frequency range.

2. **Configuration Errors** - There could be misconfigurations in the network settings of the EAP650, OC200, or the router. For instance, incorrect VLAN (Virtual Local Area Network) settings, incorrect IP addressing schemes, or incorrect routing configurations. - If the AP is not properly configured to communicate with the local network devices (like the OC200 and the router), it can lead to clients being unable to access other network resources.

**Solutions**

1. **Firmware Update** - Check if there are any firmware updates available for the EAP650.  - Go to the TP - Link official website, find the support page for the EAP650, and look for the latest firmware version. Follow the instructions provided to update the firmware. Make sure to back up any important settings before the update.

2. **Wireless Signal Optimization** - Use a Wi - Fi analyzer tool to check for interference and signal strength. You can adjust the position and orientation of the EAP650 to get better signal coverage. - If possible, change the wireless channel on the EAP650 to a less congested one. In the 2.4GHz band, channels 1, 6, and 11 are often recommended as they have less overlap with adjacent channels. In the 5GHz band, you can use a Wi - Fi analyzer to find the least used channels.

How to optimize wireless performance of EAP products

3. **Network Configuration Check** - Review the network configuration of the EAP650, OC200, and the router. - Check the IP addresses, subnet masks, default gateways, and VLAN settings. Ensure that the EAP650 is correctly configured. - If you're using VLANs, make sure that the clients are assigned to the correct VLAN and that the VLAN settings on the AP, switch (if applicable), and router are consistent. 

If the issue persists, don't hesitate to let us know.