Support needed and paid for yet cant start question without notice that my key is expired.

I just paid to get support. I have used this theme for years. ENFOLD. I want to use the HORIZONTAL GALLERY. It is NOT cropping correctly on mobile devices. I can find forums talking about this. I am unable to ask further questions or start a new thread. PLEASE ADVISE?I keep getting message that my key expired. YET I JUST PAID FOR SUPPORT.

I don’t know where to paste the code i see written about in other threads. I am not a developer. Yet i can figure most things out. WHERE DO I PASTE THE CODE? How can i participate in a conversation?