I'm also experiencing some problems... Including being unable to login to game stores.
==> /mnt/user/appdata/lancache-bundle/log/nginx/access.log <==
[wsus] 192.168.1.148 / - - - [10/Mar/2021:17:43:30 +0100] "GET /msdownload/update/v3/static/trustedr/en/authrootstl.cab?7768c4ebe73d95a2 HTTP/1.1" 502 182 "-" "Microsoft-CryptoAPI/10.0" "-" "ctldl.windowsupdate.com" "-"
==> /mnt/user/appdata/lancache-bundle/log/nginx/error.log <==
2021/03/10 17:43:30 [error] 2550#2550: *483 ctldl.windowsupdate.com could not be resolved (110: Operation timed out), client: 192.168.1.148, server: , request: "GET /msdownload/update/v3/static/trustedr/en/authrootstl.cab?7768c4ebe73d95a2 HTTP/1.1", host: "ctldl.windowsupdate.com"
Although if other people still got it working, I might think it is my setup...