Looks like it's been floated, probably why it moves as much as it does, most common is European oak
and ultracord
https://www.tradediscountshop.co.uk/shop/heavy-duty-straight-blade-box-100/
https://www.tradediscountshop.co.uk/shop/roberts-carpet-awl/
In other words the incorrect products.
I would suggest you find out what type of subfloor you have before you find out how to handle it, it could be a wood floor?
Really!
One of these? https://www.tradediscountshop.co.uk/?s=floorskills
Never ever put oil in them. It may need a new driver blade washer that comes in with a service kit.
You need to find out what exact products were used and in which way (as in sequence)
https://www.tradediscountshop.co.uk/shop/2-box100-floorfit-straights-and-get-a-knife-free/
https://www.tradediscountshop.co.uk/shop/tramex-cme5-concrete-moisture-encounter/
I've had several issues before myself. Done it with the grinder but wished I had a scabbler to see if that would of been quick or more effiecient
Kit coming soon https://www.tradediscountshop.co.uk/shop/tds-welder-kit-110v/
Keep safe everybody
If you sell other stuff than just carpets as in trinkets and bits and bobs or furnishing you can open.
You looking for any containers with racking already in them?
Just come in yesterday, but only have 2 left https://www.tradediscountshop.co.uk/shop/solingen-12-scissor/
They are Merit, coming in tomorrow as well
https://www.tradediscountshop.co.uk/?s=solingen Just about to place an order for some more today as sold out of these