Can’t open Numbers Document after update

Late last night I had a an email from a customer concerning a project. I went to open the Numbers document and was faced with an update notice. I ok’d the update thinking it was a good thing.

After the update I couldn’t, still can’t, open certain documents, some just recently created on my iPad. I looked on iCloud and Google Drive and the same thing.

What gives? A new version should open older files to be saved again. Right?

I already have problems enough with using/learning Numbers I don’t need this to. Especially when it involves customer data.