There are several reasons the issue final button may be disabled
The Project is not approved.
The Certificate requires a recreate or a remerge.
The User is running in historical mode. (Modified under Options window).
The User is not in the correct logged on region.
If the project was switched from 1 project type to another, there may be a flag incorrectly set. (Developer assistance required)
6. The project has already been issued. The certificate summary and certificate tabs would be disabled