Jitsi desktop doesn't get online when modem is delayed

Hi community,
recently I installed Jitsi desktop. I’m happy with it so far but there is one issue:
My modem takes a fairly long time until the connection to the internet is established. Therefore, when starting Jitsi on runup of the computer, the SIP account doesn’t get online. Apparently Jitsi doesn’t try to establish the connection repeatedly but instead stays offline when there was no internet connection at startup.
Edit: I’m on windows 10.
Is there any measure to fix this?
Best regards - Ulrich