As far as I remember, the Foxy version was never stable for the ROSbot 2 PRO. Even though the latest system image is Ubuntu 20.04 with ROS Foxy installed natively, we use the Humble series instead. Since Humble is compatible with Foxy, there shouldn’t be any issues. I recommend to use setup from this thread: ROSbot 2 PRO: Not able to access the topics from on the laptop - #6 by RafalGorecki