F-one board question

I’m not very good to explain, especially not in English but I’ll try my best.

I was on kiting in El-medano, and one screw or bolt that holds the foot straps fell out while I was on the water, and I obviously lost it. I went to the kite service, but the problem was that they didn’t have the round things you put underneath the bolt or screw, but I’m not talking about this little metal plates, but special plastic from F-one, that fits perfect for the foot straps. So, they put like those normal metal plates, and it was too late when I realized that like the plastic notches on the footstrap on which you can adjust how the footstrap is placed were broken. Will this be a problem? Or can I just order one of this f-one things you put underneath the bolt?

Those triangular things on the picture, like top half of them are gone