Hi,
FOP2 is not related at all to EOP, so nothing you make in FOP2 will affect FOP2 and viceversa.
Regarding the license, you can test your install using the lite version, but as you see it will only show you 15 buttons. You can revoke the license on the other server and register on this new one, and if you are unsatisfied with results you can revoke the new server and register again the other one. The command to revoke is /usr/local/fop2/fop2_server --revoke, and to register again /usr/local/fop2/fop2_server --register
Best regards,