Blank pages

[Zoenga 0]

I have a fairly large document which has worked fine until now. Suddenly I can open it and as I scroll through it the pages go blank and the document locks. I then struggle to get out and log back in. Other documents seem ok and I can see it on my Samsung phone.

I have done the usual reboots etc to no avail.

[jefito 5,501]

Windows? Mac? Android? iOS? Web?

[Zoenga 0]

On my iPad and also on Samsung edge