Check_mk-interfaces no perfdata

When I switch the Sophos XG to SNMPv2 or v3, checkmk no longer reads any services at all.
With SNMPV1 it detected the interfaces, CPU, Memory etc…
What am I doing wrong?

In the connection test the following data is read out, bot shows no services.

sysDescr: Linux localhost 4.14.38 #2 SMP Sun Dec 6 01:19:34 UTC 2020 x86_64
sysContact: Company
sysName: SG1
sysLocation: Location 1