Problems with Samsung Galaxy A5 after SSL renew

Hello,

after SSL renew we´ve problems with Samsung Galaxy A5 Devices. They are running Android 8.0.0

The SSL Cert is from Sectico (former Comodo) running for 1 Year.

All other Devices, iOS, Android 10 are running well after SSL change.

Sophos Mobile On Prem Ver. 9.6.2

Does anyone know problems with these devices?

regards,

Marius