Virgin App not working for me for over a month

Ever since Virgin has 'upgraded' their app, I have not been able to book a class online. I keep getting a message 'token expired'. I emailed them on the 15, 20 and 22 June - I eventually got a reply on the 22 and then again on the 27 June saying that they were working on the issue. All my gym friends are managing to book online, except me, which I find strange. Virgin has not once tried to call me to sort the issue. I find this frustrating as I go to the very popular classes and cannot book. It might be a reason to leave the gym. Please Virgin get back to me so we can sort this out. Shelley Prince