No Response or help from Discovery Health

I have been a member of Discovery Health form May 2019. The last few months I have been struggling to register on their app. What happens is when you try doing it on your phone via the OTP, you get to the page where it says cancel or next. But after filling in all the details you still cannot click on next. (it doesnt highlight) So we tried doing it via the email. Then it says email is not registered. I have sent Discovery Health an email a few months ago and didnt get a reply. Now again sent an email on Monday and still nowhere near resolving this issue. Ref nr *** Pathetic service.