PHP fatal error. with Enfold Forrest Theme (can't update the php and no more changing my pictures)

If I update my php from 7.4 tot 8.2 I get no longer acces to my dashboard. If I set the php back to 7.4 then I get back acces to my dashboard.
Also: I can’t change no more any pictures. Neither replace them our put a new one into an element.
I’ve got this as feedback from Vimexx with the questions to contact Envato:

[lsapi:error] [pid 55953:tid 140055343503104] [client] [host] Backend fatal error: PHP Fatal error: Unparenthesized a ? b : c ? d : e is not supported. Use either (a ? b : c) ? d : e or a ? b : (c ? d : e) in /home/barthsm/domains/ on line 265\n,

Can anyone help me with this please.

Best Regards,

Make sure you’re using the latest version of the theme. If issue persists, you need to contact the item author for the free support/update.

Thanks for you answer. My English isn’t very good, yet I try my best…

I have tried to install the latest version but it doesn’t works …;-(.

How can I contact the item author for free support/update?

How to contact an author to get support or for any technical query: