I got the msg "Your expedition (XXXXXXX) found some fleet in perfect operating state. Unfortunately, no one in your fleet was able to control those units".
what are the options to take control of these units?

you can only control ship that match ships on your expedition
so if you have overlords fastlings and mudkips you can only bring back overlords fastling and mudkips
so send a variety of ships  

thnx !!!

Awesome