This seems like something I could diagnose, but not without seeing the file. Can you upload the "bad" zip file somewhere for me to look at?
Viewing post in Problem with web support, UFT8
Thank you!
Of course I can upload it: https://mega.nz/file/3fQ1nSTK#MWYPgIo7nTYC9so638akc0d0X5gj0TSg3Q5Kf4--VJg
Really appreciate your help :-)