Hey i managed to see what is the problem. The database is VERY huge. there is only one table co_block that i can't export with phpmyadmin because its 2 big? Is co_block important? Do i need it?

Saw the BukkitDev issue thread -- can't tell you much without you actually giving details about your setup. Make sure you copy all your data over -- not all of it might be attached to PEX, but the tables that do are important.

Also make sure both your servers have been in online mode -- offline mode uuids are different and not supported.

Table co_block has been created by CoreProtect. You can disable block logging in your CoreProtect config. It have nothing to do with PEX. To export big database to file you can use Linux OS command on machine with MySQL installed: mysqldump

Thanks @SlimaKCoder