[tonythetiger]

Originally Posted by Burg Boxster

The fastening plate has a screw molded into the backside which screws into the carpet.



I'm sure you can find them cheaper but here's where you can buy replacements as it sounds like the screw has broken off yours.:

https://www.ecstuning.com/b-genuine-porsche-parts/floor-mat-fastening-plate-priced-each/98655198500/

BMWs of recent era also use them and they are approximately the same size so they can be interchanged and/or found on fleabay:

https://www.ebay.com/itm/BRAND-NEW-BMW-GENUINE-OEM-FLOOR-MAT-HOLDER-VELCRO-LOCK-18F10-FREE-SHIPPING/132697065839?epid=5020510932&hash=item1ee55c896f%3Ag%3ANzAAAOSwjzJbJ5rn&_sacat=0&_nkw=bmw+velcro+mat+tab&_from=R40&rt=nc&_trksid=m570.l1313

Good luck

OK, the screw isn't broken off, also, I have a new one. The screw is there, the hole in the carpet doesn't hold the plate...think like a stripped out screw hole in wood or something. If there isn't something that this plate screws into besides the carpet (the hole is worn out and doesn't hold the fastening plate) then I have to figure something out.