Let MfE step back (need to power up my N950-in-use and have a look) and first get your certs done! I gave you the hint already: devel-su develsh acmcli -c common-ca -e -a myCert.pem
~ $ devel-su Password: BusyBox v1.20.0.git (MeeGo 3:1.20-0.2+0m8) built-in shell (ash) Enter 'help' for a list of built-in commands. ~ # develsh BusyBox v1.20.0.git (MeeGo 3:1.20-0.2+0m8) built-in shell (ash) Enter 'help' for a list of built-in commands. ~ # acmcli -c common-ca -e -a /home/user/MyDocs/Downloads/16b5321bd4c7f3e0e68ef3bdd2b03aeeb23918d1.pem ERROR: cannot add certificates (Permission denied)
~ # accli -I Current mode: open IMEI: Credentials: UID::root GID::root CAP::chown CAP::dac_read_search CAP::fowner CAP::fsetid CAP::kill CAP::linux_immutable CAP::net_bind_service CAP::net_broadcast CAP::net_admin CAP::net_raw CAP::ipc_lock CAP::ipc_owner CAP::sys_ptrace CAP::sys_pacct CAP::sys_boot CAP::sys_nice CAP::sys_resource CAP::sys_time CAP::sys_tty_config CAP::lease CAP::audit_write CAP::audit_control CAP::setfcap GRP::root GRP::dialout GRP::video GRP::pulse-access GRP::users GRP::metadata-users GRP::gallerycoredata-users GRP::calendar AID::.develsh. tracker::tracker-extract-access tracker::tracker-miner-fs-access libaccounts-noa::accesssvt package-manager::packagemanager_limited package-manager::packagemanager_private icd2::icd2-plugin Cellular TrackerReadAccess TrackerWriteAccess Location FacebookSocial develsh::develsh
~ # ariadne acmcli -c common-ca -e -a /home/user/MyDocs/Downloads/16b5321bd4c7f3e0e68ef3bdd2b03aeeb23918d1.pem Password for 'root': 16b5321bd4c7f3e0e68ef3bdd2b03aeeb23918d1
Powered on and ... what are your settings in MfE account (obfuscate)?
E-Mail: mail@domain.tld User: mail@domain.tld Pass: PASSWORD Domain: Nothing Server Address: horde.domain.tld Secure: YES Port:443
E-Mail: mail@domain.tld User: mail Pass: PASSWORD Domain: domain.tld Server Address: horde.domain.tld Secure: YES Port:443