Web login lost: Problem is not in Umbrel

Environment: miniPC 4gb/7000gb,
UmbrelOS 1.3 was installed and worked fine for 4 weeks. Each day i checked the status by login by IP and menu and apps were available and running.
Suddenly in the last login I see only ocean picture but no menu and login possibility.
Why and what could the problem ?

Problem resolved. Explanations found: Incorrect parameters of Wireguard conf.

I assume you indicate that you have a mini PC with 4GB of RAM and a 7000GB drive… that is, 7TB…

Well, with only that information it must be the RAM… it is saturated and takes a long time to respond correctly showing you the page with the apps and/or login.

4GB of RAM is already very little, and if you have many apps installed, it will be worse.