Hi @LarevekAEP
If you are trying to convert Power Pages to production then I am afraid it is not yet available.
Please try the following
1. Log into https://make.powerapps.com
2. Choose right environment
3. Create powerapps portal.
4. You can use portal studio and convert
5. Or go to step 1. Choose your portal. Three dots and convert.
NB: you should have power apps per app or powerapps per user license
Hope it helps.
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