Reddit admins just told me to ban evade

I logged onto an account I tried to age and use for reportmaxxing a few months ago, now it's gigajannied and I got this message. Has this happened to anyone else, and do you know what causes this so I can avoid it with my next account?

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Try a new device? You could be mac banned. Also, you do Vpn, yes?

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Also, you do Vpn, yes?

Not with this account but I could use a free one like tuxler. I'm pretty sure I've been Mac banned since when I participated in /r/place, but I didn't get suspended after months without posting before.

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