I use version 12 of freepbx and I can not change version. Unfortunately, the Fop 2.31.21 does not communicate the data and does not allow me to see the conference participants. In other machines I manage, the system works very well. Can I uninstall the Fop 2.31.21 and put a different version that works with the PBX 12?

any suggestions?

We found the mice of the failure to communicate pbx-fop2. The problem was a plughin installed that conflicted. Eliminated the plughin everything started to work again