Unnatural flooring help

I’ve had this carpet fitted but it’s fraying where the riser meets the tread - excuse me if I’ve got the wrong terms. I’d like to somehow tuck it in and seal it with some kind of glue to prevent the problem getting worse. Can anyone advise? Thanks

 

Copydex should do it, you can get small bottles from diy stores and probably online from Amazon

 

Have you any pictures ??

 

See attached

 

It looks like the tread is coming away on the picture ? if it wasn't fully glued they may be able to get it over a bit more , how long ago was it fitted

 

Did you buy and have it fitted through a shop?

 

Didn't realise it was was that type of carpet, better to get someone to do it properly, if you start trying to tuck it in yourself, it can quite easily make it worse