No companion update button available

Hi Steven, it is not clear what your problem is.
Can you please provide a screenshot of the network page in the companion web interface?
Please also include some screenshots of the system page.

Yes:

To begin using the Water Linked system again and get through your ASAP situation, you may also revert to using our previous edition of QGC (3.2.4-r6) here: Release v3.2.4-BlueRobotics-Rev6 · bluerobotics/qgroundcontrol · GitHub