Winshield caves in.

[Splash]

I am new to UTV world. I just purchased a 2023 defender max hd7 and had the dealer add a fold down windshield.  When I tow, the windshield deflects and bows into the cab.  It pulls all of the plastic rivets out of the bottom of the windshield and if it weren't for the shift lever it would blow all the way into the cab.  Anybody have a solution?  I am going to look at putting a temporary vertical brace from top to bottom but I am not sure how to attach it.  Any suggestions would be appreciated.