Zerotier suddenly stop works on new nodes

[alfa33man]

Hi.
I use Zerotier since 3 years without issues, but last months i have problems with new nodes.
I use ZT to connect via RDP to many servers, and the last nodes i add, they work fine for a few minutes and then suddenly stop working. After the failure, I can’t reconnect anymore.
If I delete the node and recreate it, it works again. After a while, it stops again and there is no way.

I don’t know what I can do to make them work correctly like the rest of the previous nodes that don’t fail.

Thanks.

[Boilerplate4U]

Perhaps energy saving sleep mode?

[alfa33man]

No
the computers are running ok. If i change them to another node, works. If i join to a new node, works 20 mins and then bye…