, BLF and yealink

Hello All

I’m facing here a very strange problem with the new freepbx versions and blf.
We installed a 13.0.167 at customer a with Yealink T42g,T48g,W52p phones, everything works fine.

Now we made a project on a other customer with, Everyting configured the same way as on the previous customer.
This time the blf for call pickup doesn’t work at all. After hours of searching and googling and even updating to the latest version of core and other modules, still no success.

What has changed in these version?
The only diffrent I really see is this message: res_pjsip_pubsub.c:611 subscription_get_handler_from_rdata: No registered subscribe handler for event reg

Dont use PJSIP if you want reliable BLFs