@Hac You never mentioned if you are using the OC200, cloud controller or Omada controller of if these are standalone, but resetting them wont help if they are managed devices, the settings will be...

Are you sure there is no filtering or rate limiting, since both your 225 and 245 does the same on the 2.4Ghz I'd be looking at any rate limits you have on a mac address

Why are they not be connecxted to a more permanent SSID, one where they do not need to use specific time limits, could you not give them specific logins so they authenticate with their own account...

Take the 245 out of the question, enable the SSID on your C5 and try it directly on that, does that work? Is your 245 using internal or external DNS, is it using the archer as it's gateway? Is the...

I have 2 x 245 V3 and 3 x 225 V3 all latest FW and i can't say i am noticing much in the way of differences or issues on either. The 245s are better if you are pulling large files over the network...