@tansuk I can confirm your theory, it has something to do with the scheduling itself, I updated my ER7206 again to version 1.2.3, disabling scheduled wifi optimization fixed the DHCP problem, I had...

@peter-bis Changing the port to 465 and enabling SSL fixed it for me.

@Fae That's right. Of course, I'm happy to help, what do you need?

I use an OC200 in 5.6.4 and an ER7206, after updating the ER7206 from 1.2.1 to 1.2.3 the DHCP started to die during the night, every day I have to restart it to get it working again.