Best answer by NinjaGeek
Ok, It could be three things.
1: An issue with your account
2: An issue on OVO end
3: An issue with the device you are using to access your account. Have you tried clearing your cookies and cache?
Best way to see if it is number 3 is by opening a private browsing window which you can do so by pressing the three dots and incognito. Or if you are viewing via a desktop or laptop, you can press Ctrl Shift N if using Google Chrome.
If you are successful accessing your account by following the steps above. This will indicate you will need to delete your cookies from your machine.
Look forward to hearing how you got on.