Mikrotik Lora8 connection not restored

Hi - This is a variation on a question about How to make MikroTik wAP LR8 kit automatically reconnect to TTN after power outage?

The issue boils down to: If the gateway doesn’t see a valid network then it will not restore a connection to TTN. The log file shows a message that says ‘Couldn’t resolve eu1.cloud.thethingsnetwork’
I have a UPS on the gateway, but that won’t solve the possible issue of losing internet network service due issues on the isp side. That will also cause the above problems.

Does no-one else have this issue? I asked on the Mikrotik forum, but no reply
Russell