Alright about three years ago I was playing zOMG when it first started and I chalked all my rings for gaia gold figuring I would replace them as soon as I get the chance, well life took hold and I couldn't get back onto gaia till recently I wanted to get a ring to get back into zOMG only now I'm hearing I can't use any of the rings being sold so I'm stuck in being able to play.
You can use the rings bought in the MP. It's just not worth the price seeing you get most of them for free playing the game. If you don't have any rings left, you could go to the Village Greens and join some crews. Explain to them what happened and get them to recrewt you so you can have a chance of a random ring drop while they go about killing things.