I have 2 identical Liftmaster 3585S (purple button, Security+ 1.0) openers with 398LM wall switches. I installed GDO blaQs on each one. First works as expected and reports correct % open or closed. The second one is able to open or close the door, but % open or closed is not reported and it only reports opening or closing. If I disconnect the wall swiwtch then the second one starts reporting correct % open/closed and correct status when fully open or closed.
Other info: The wall switch for the first one no longer illuminates and motion sensor doesn’t work. This seems to be expected behavior per another thread and could be fixed by switching to a newer wall switch. The wall switch for the second one remains illuminated and the motion sensor continues to work when connected to the opener.
Any ideas where the problem may be?