How do I check old purchases for Construct 2 if I havent got access to the account anymore?

I know this is an odd question. Back before Construct 3 came out, I had purchased Construct 2 or a License for it I can't remember which. Back then I was having severe mental health issues and have recently finished a long therapy program and I want to revisit this platform for a game idea I have. The problem is I can't remember the email, account name, or card I used to purchase Construct 2. Is there any way to to find that information, or is it just gone by now?

Contact supportjnb@construct.net with any details you have and we will try to recover your original Construct 2 purchase. However I'm afraid we will need some kind of proof of purchase as otherwise we have no way to either find your old account or verify that you are the owner.