Finally i had an occasion to do further experiments. Inspired by other hints across the internet, i unpluged the phone (from phone1). Didn't work, webinterface still hangs when i try to access...

@TP-Link It's not very helpful on a forum to refer to private messages.... @Wuffi84 Ususally the telephone does not automatically connect to the DECT of the router. I assume you configured your...

@chris7818

Just for completeness: Same problem here https://community.tp-link.com/en/home/forum/topic/507492?replyId=1022778 (where frozen already answered). Any fix or workaround yet? Since i can't access...

Nope, no solution yet, but also didn't have occasions to really try out more yet. Would appreciate further hints too.

I found some other posts on the internet where other people had the same problem. But sadly no solution. It might probably not be really common, but i'm not the only one having this issue. Asking for...