EA HELP are usually pretty good at restoring lost conent but there is a longstanding bug called the restore purchases bug that appears whenever you enter the store.
This bug seems to lurk in the servers and reappears after a reinstall but eventually goes away of it's own accord.
If you really haven't received something like a premium plant (easily verified) then i suggest you get onto them again.
As i said, they are usually pretty good with missing content cases and if you can prove you bought something and didn't receive it then then they will add it to your account then send you an email telling you so, sometimes with some gems or something as a goodwill gesture.
After I provided all the proof, they sent me an e-mail saying the plant was restored. It was not. I sent them more screenshots. Haven't heard a word for almost a week. They've usually restored things right away. This time they took 19.99 from me and I don't have the content I paid for.
