When I enter my details I get this error:ERROR: options page not found
Does that happen very time?
If you’ve installed the UpdraftPlus Premium zip that you can get from your account page – http://updraftplus.com/my-account/ – then you only need to connect in order to receive future updates automatically. Otherwise, you can skip the connection step. If you do want to try to get it working, then try disabling other plugins – I suspect there must be a conflict with one of them (I’ve never come across this error before, after a million downloads, so it must be something unusual).