OP, do as advised by the very knowledgable imastawka and get in touch with eBay using the call me back option. It's your only hope. You are wasting time by emailling, as you get a bot generated reply.

I clicked on a few of your listings. There is no mention you are drop shipping. That in itself is a no no. You must reveal to buyers that you are drop shipping. Yes, eBay allows drop shipping, but your buyers must know. Ebay could be concerned that a buyer receives a parcel that has been sent by XYZ company, because it shows their logo or something, so if they want anything else, they can go direct to the company, instead of buying from you.

Where are your suppliers? Are they located in Australia? Apparently any of your items will arrive to me in less than a week. I love the look of your big greenhouse, but would it really arrive to me before next Thursday? (I really do love the look of that greenhouse and would be perfect!)

I clicked on the shipping link in your listings, to see if there was any mention in there about being sent from a different location to your own, and got taken to your eBay Me page. In fact, all the links at the top of your descriptions take you to the same page. I know that has nothing to do with your issue, but it's still something you should fix.

You need to listen to what eBay tells you, because if they restrict you permanently, then that's it. Even if you create a new account, they will block that one too. If anyone else in your house sells, even just as a hobby, their accounts will be restricted too. It does sound like this is your second warning. It could be a case of 3 strikes and you're out.

It could be worth starting a new thread asking if there are any sellers here who drop ship and if so, what procedures do they follow. It could be something really simple that you're missing.

Please keep us posted as this is not the usual type of problem we get here in the forum.