My dad is considering a premium membership if he can play online chess on his ipad, but the pieces will not highlight by the touch application.  Is this because it recognizes the ipad as a phone, as I know that non-premium players have only so many moves by mobile?  He doesn't want to purchase the membership if it still doesn't work. 

Staff please get back to me as soon as possible, because he leaves for a month and would like to still play games during this time. 

Can he click on one of the TABS or forward/backward one move first and it then works.

I will check it out with him.

Thanks Kohai, it works now.  Thank you chess.com for the support.