If you've lost your serial number, there's a very good chance you can retrieve it but only if Adobe Acrobat is still installed and the computer it's on is working.
Ọ bụrụ na ịchọta nọmba serial gị, enwere ohere dị mma ị nwere ike weghachite ya ma ọ bụrụ na Adobe Acrobat ka na-arụ ọrụ na kọmputa ọ na-arụ ọrụ.