BRANDMEISTER Manager Sub-panel has vanished

[W1CY]

I got my Pistar updated and upgraded, as well as the Linux Kernel.
I am running Pistar version 4.1.4, Dashboard version 20210322. The Linux distribution is Raspbian GNU/Linux 10 (buster), and the Linux kerne is at level 5.10.17-v7+. Prior to the upgrades (still at pistar v3), I had the BMAPI set and the related TG control subpanel Pistar's Administration tab.

After the updates, the BM subpanel that allows me to add and/or delete static and ptt selected temporary TGs (Brandmeister Manager) simply vanished. I tried everything short of re-imaging the microSD card: I re-entered the BMAPI into Pistar, I revoked and generated a new BMAPI and entered the new one in Pistar, restarted Pistar, etc. Nothing brings me back the BRANDMEISTER MANAGER subpanel in Pistar. Has anyone had similar issue, and if so, how did you fix it? Thanks.

[W1CY]

Many thanks!