I can’t import and sync products

This is the second time I am writing this and you just brush it off from the first time.
I am paying for support and I get nothing!
I have a problem and I can’t sync and import SOME products which I imported a long time ago and deleted, now I want to import again. I have fully deleted the website that few times, but I realise that I can’t import products that I import a few months ago and deleted a few months ago. You were successful with importing, but it doesn’t work for me! Please check what is going on, as I am writing about this for quite a long time !!!!!!!!!!!!!

I can’t sync products:
https://snipboard.io/N6tyUT.jpg

When I try to import a single product that I imported and deleted a long time ago I get this message:
https://snipboard.io/TxMVgl.jpg

When I try to import bulk products that I imported and deleted a long time ago I get this message:
https://snipboard.io/1l2Irs.jpg

WHEN I DELETED THE PREVIOUS PRODUCTS I MOVE THE WEBSITE TO ANOTHER HOSTING BUT I DIDN’T MOVE THE PRODUCTS, JUST REMOVED IT FOREVER, SO THAT’S WHY I AM CONFUSED ABOUT WHY I CAN NOT IMPORT THE SAME PRODUCTS!

PLEASE PAY ATTENTION AS THIS IS A BUSINESS AND I LOSE MONEY UNTIL YOU BRUSH IT OFF !!!!!!!!!!!!!!!!!!!!!!!!!!!

I KNEW WHEN YOU TESTED FROM YOUR SIDE IT WORKED, BUT IT DOESN’T WORK FROM MY SIDE, IT WORKS ONLY WITH PRODUCTS THAT I HAVE NEVER IMPORTED BEFORE – FROM MY SIDE !