If you're IP banned on 1 IP, don't change IP to log into the same account that got IP banned.
(you need an account to see links) If they actually do what they say: they have digital fingerprinting. You could risk having multiple IPs getting flagged/banned, or worse, your account frozen (albeit very low probability unless you're ABing).
Patented device-level fingerprinting technology distinguishes individual devices—not just individual IP addresses—to take a better look at suspicious traffic and reduce false or missed positives from situations, like bad devices using different IPs or good devices using “bad” IPs.
It costs them anywhere between $2 - $10 per 1M requests.
(you need an account to see links)