There is no need to pay anything. Let them recover the amount through the court. The court will most likely reject their claims if you file an objection regarding this issue. Also, the court may reduce the amount.
Most likely, this company will not file a lawsuit, since you have not caused any damage to them.
Courts often reduce car sharing fines if:
There are no clear evidence of violation (for example, photos before and after the rental).
The amount is clearly overstated and does not correspond to the actual damage.
If u need help, u can write me on what's app or telegram on number, which in my profile