Mac OS Catalina upgrade with excel for MAC corrupt
I upgraded my MAC iMac (Retina 5K, 27-inch, Late 2015)
to the latest version of Catalina and now all my Excel files are corrupted. I am using a purchased product
Microsoft excel for MAC version 15.30
All the data is backwards and corrupt! How can I fix and restore vital files
I will insert a screen shot of an example. I tried to open all my back up files but they are all the same!