Hello!
First off. Bonding takes time so be patient!
Secondly. Nameless could be a bit cold or frightened of new territory. Are you playing with them at night? During the day my gliders want to sleep so they scurry right into my shirt to sleep.
My glider, Gidget, bonded to me very quickly. Whereas her brother Bobby hated me for a solid 6 extra months. (He's also just grumpy. I'm sure Nameless will be lovely soon!!)