@Theo74 Sounds like it's brick. Since Recovery firmware wasn't help, you may need to contact tplink and ask warranty

@LFS92 Genius! Glad you can find a solution!

TheMuk wrote @Somnus I tested it and all saved history goes to the Primary Controller storage and NOT to the attached USB stick. So my featire request stays valid. @TheMuk My bad. Just check again...

@Ryan_M I want to help but it's out of my knowledge.. But I notice you are using an old controller verison. Upgrading the controller V4/V5 may help, I don't know

@LFS92 I also can't find any way to reach ARP table on omada controller. I think you may try standalone mode first and confirm this issue is related to ARP table aging time, then report the...

@_Ian_ The error message you post can't detect the problem.. Not sure if it is related to the API or so on. You may try F12 on the webpage and share more error details here