My lightroom will not transfer the photos into catalogs or catalog sets, I have done this for several years. I tried the help desk and no answer today nor able to chat. It says the office is closed
Your question needs more explanation!
What do you mean by "transfer the photos into catalogs" ? Do you mean 'Import'?
What is a "Catalog Set"? Do you mean a 'Collection Set'?
What is the Version mumber of your Lightroom-Classic?
What is you Operating System Version Number?
Do you see any error messages? Quote them with the exact words.