Hi Mathias,
Trimble will need to disable MFA if they no longer have the Phone number that they associated their TID with for the Verification code.
Your colleague will need to send your Reseller their TID, request MFA is disabled as their phone number has changed, and their Reseller will be able to contact the relevant Trimble Support team.
All login options will lead to the Sign in, and the Verification step (including License Manager).
https://myprofile.trimble.com/ - is the place where anyone can access their Profile to turn on/turn off MFA, but once it's on and you can't access it, then Trimble will need to intervene.
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Brendon Edge
Geospatial Support Manager
Trimble New Zealand
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