Increased after having them cut or increased period?
5 Dimes seemed to accidentally raise my limits back to normal a few years ago, before cutting them again after about a month.
MaximBet seemed to increase my limits to 4x what they were (hoops went from 2k to 8k, NFL from 4k to 16k) after I dumped 50k to them in December. Took them for 300k the first week of January and they promptly cut them again each day (2x original, 1/2 original, 1/4 original, 1/32 original) until it wasn't worthwhile to bet with them. DraftKings had cut my limits to sub $100 after beating them up on Korean baseball in May of 2020 when that was about the only thing to bet on. I withdrew and forgot about them until I was out in New Hampshire for a wedding in October. They were the only domestic book in NH so I decided to see if limits were normal for live NFL. I don't think they were full limits but they were big enough to be worthwhile.
The problem is unless a book has a max bet button or gives you the max as you type it in, how do you know whether your limits have been raised/restored without making a decent sized deposit and testing it out? Offshore is at least a little better in this regard as most books tell you your max in the betslip.