Are you a member of an "organization" on nice hash? IF so, the organization owner has to give you permission to place a rental order, according to that page. If not, then that seems like a strange error to receive and maybe you should just contact nicehash support either way.
i sent them a support ticket but they may take a couple of days to reply
however, i have a feeling that it is because i enabled the 2FA which they website says locks the wallet for 24 hours that might be the reason that not allowing me to use the funds and showing that strange error
will wait to see what they say