Hi @Richard-and-Susan0 🙂
When you receive an inquiry all you need to do is to reply to the message as fast as possible. Never touch the "decline button". You can press the "accept button" if you think the guest would be a good match and you would like to invite the guest to book but you don't need to.
I always just reply to an inquiry. I never use the decline or accept button and I have a 100% response rate.
It is of course different if you get an actual "request" where the guest ask to book.
Best, Sandra