Shipping Costs Not Saving

Okay bit urgent this one as live shop has a problem. I have set up shipping by price for UK/EU/ROW. Three different sets of rates based on country. It was going well but missed one country a couple times so went in and removed ROW shipping rates to redo to make sure.

But now it is refusing to save more than one like it has run out of space or something even though they were there before. This is a serious issue and pulling what’s left of my hair out.

I had amended country list to arrange countries so easier to mark up and was working fine and EU/UK still working fine:

UK
—
List EU here
—–
List rest countries here

Be ever grateful if someone can help