BubbleUPnP clash

Hi folks, wondering if anyone else is using BubbleUPnP media streamer as I’m having issues with access being interrupted. I know Syncthing uses UPnP as well so wondering if there is a clash between the 2 systems? I have both servers running on Ubuntu 20.04 desktop and access via the relevant Android apps. Both seem to run fine but every 15-20 mins of inactivity I have to re-enter my login details for Bubble UPnP and off we go again and I’m wondering if Syncthing has syncd with the server in the interim and taken over the UPnP connection? Any help gratefully received.