Just upgraded to 4.0.1 per medkit directly comming from 3.11.7.
And i got the same issue like descriped here by @ssdnvv. Just had for 2.4 and 5 GHz each a “?” SSID in there. Did not changed even after using Foris to enable both radios. They have been stayed there just additionally. Anyway Wifi worked normally…needed to remove manually in Luci.
You may want to have a view on it as i doubt that it was a random issue.
And the WAN Setup Section should really include a hint to the SFP activation process. Without mobile internet i would have never been able to fix that.
Anyway everything else works and is quite fast! Thanks for your work 