jamesm Having access to old versions is something you have to pay for if you want access from an official channel.
You can’t downgrade unless you have been downloading the full versions and have keep a few of them on hand - or unless someone is willing to provide you a link to an older version they have saved in the cloud.
I recommend always keeping the last 6 or so installers on hand for situations like this. Yes, that’s about 4GB or so, but anyone using this software should have enough storage capacity for that peace of mind.