Good afternoon,
In such cases there are some steps you can try;
Restart the VPS, check the ports (if it is not in conflict with any other), release port 44405 on the firewall and test.
It is also worth taking into account the possibility of attacks, search for netstat command on google and take the test to check your connections.
*Sorry for any misunderstanding of the text, it was translated to try to help you, native language Portuguese brazil