@DREEMus Hi, have you tested if there is a loop in your network? Actually how long did you use this switch, maybe a hardware issue? You can use 2 PC to connect to the issue ports and ping each other...

@JBortone Hi, did you enable link backup? If so, it is normal.

@SSpE You can set online detection, check this:

@TandS Have you tried rebooting switches to test? TandS wrote I have since gone back to the V1.2.2 Feb BETA that was working fine but no difference now :( Do you mean this issue can be fixed by...

@Marco_Moreira52 Suggest you check if the EAP245 v4 obtains a valid IP, and better to change the ethernet cables to test. Normally, it will be fixed by changing a short cable.

@Byyonic Suggest you check if the EAP225 obtains a valid IP, and better to change the ethernet cables to test. Normally, it will be fixed by changing a short cable.