@trpitman Hmmmm, thenk it's hard to say. Your current FW is 2.1.2? Then maybe try to upgrade the device to some older FW version that the newest one? Like 2.2.3 first, then 2.2.6 I'm not sure, just...

@trpitman Make sure you are downloading a FW version which match your device's region. If you are not sure about the device's region, you always can use universal (Global) FW:...

@downtheroad In theory config is saved on Controller. SO after FW downgrade the device will be adopted again according to your controller's saved settings :) I have just done downgrade to my EAP and...

For anyone interested in this topic. After some addiditonal testing I've "discovered" that only 10% (or less) of the issues is connected with WAN itself, therefore I could safely say that this part...

@Wyciu Hi, If I recall correctly in my configuration I was doing ACLs to Deny connection between VPN network and some VLANs (to do so I had to add IP Group which covered VPN's IP Pool). Also, I do...

@Clive_A There is no optic fiber. Those are cellular carriers who provide Internet via 4G/5G network. I guess I'll try some more tests and then leave it be, unless someone in here has some idea what...