backup grayed out

Can’t do a backup as the option is grayed out. Any suggestions on how to fix this? I tried an uninstall and reinstall. Didn’t help. Thanks.

can you give some more info? 

type of phone

Andriod version

have you recently updated software of firmware

what version of memory zone

any other info you can provide will help

If you don’t have a memory card or any cloud services accounts set up then you have no destination for a backup and therefore the button will be disabled.