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Have you tried mining IDENA? IDENA mining does not require a very high CPU, I think it will be safe to avoid getting banned. all you have to do is download the wallet, pass validation for the first time, then you can mine IDENA.
This guy has an idena signature, so it's more than likely he has already tried it. What's more, he had no other option, because you need an Idenq account to participate in the campaign.
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I currently have VPS in Digital Ocean....
How strong did you choose the configuration server 1 cpu 1 gb ram or something stronger?
For a month or two I was mining Ring Coin on Digigal Ocean (4 cups's vps) I even managed to mine a few coins but it was more for testing than earning money. In general, VPSs (and especially the inexpensive ones) do not have strong enough cpus to to mine effectively...