I had a smudge mark on the grey fabric of my CT381 soundbar. I was advised in Curry's to try WD40; which removed the mark, but created a grease spot that looked even worse. So I used a small amount of fabric foam cleaner and gently rubbed it into the fabric. It's removed the grease mark, but it's created a faint water mark instead, and it's also made the area slightly more transparent than the rest of the fabric, so you can just see the framework underneath. It seems as though the moisture has 'thinned' the fabric.

Is there anything I can do to 'plump' the fabric back out again, and / or remove the water mark? Or have i done irreperable damage here?