Home Assistant 2022.3.7 & Shelly Plug with Firmware 20220209-094231/v1.11.8-g8c7bb8d not working anymore

After doing a firmware upgrade of my Plug to 1.11.8 and a new install of HA (2022.3.7) I can't connect to the plug anymore. It did work with the older HA release and plug firmware, but now I'm stuck with the following HA error message which keeps repeating:

home-assistant.log.1:2022-03-28 22:24:21 WARNING (MainThread) [aioshelly.block_device] device 192.168.x.12 initialize error - TimeoutError()

The Shelly debug log shows the connection from HA but HA keeps returning a Connection Error in the UI ("Connection failed"): I can see the connection attempts in the shelly debug though:

1094114504 mgos_http_server.c:180 0x3fff2024 HTTP connection from 192.168.x.2:36840

I tried all with COAP ports but I am not even getting the device to be added at this point, and it did work before.

I did factory reset the device as well, also nothing changes, unfortunately. Any help would be highly appreciated.

Got it fixed. HA runs in QNAPs Container Station version of docker, and it did not let the udp call from the shelly device land in the container. (In Host Mode).

Recreating the container in bridge mode worked just fine. Now I can read devices. Sorry for the inconvenience.