Plex won't enable anymore. It stuck Enabling

Hi there,

I used Plex server on my Cloud Duo since 3-4 years maybe. With recent update I figure out PLEX won’t work. I try to enable via web interface, I click Enable button but it stuck as Enabling. When I check:

comes with this result:
{“key”:“noAuthHeaderOrQueryParam”,“message”:“No Authentication header or Query Parameter”}

I turned off all firewall things. I stuck. How can I re-enable PLEX? Thanks.

Dear mkaand,

please open a case with our support team, so your issue can be further investigated: