Were you using VPNs in the first place with the one account that got shadowbanned? VPNs aren't generally recommended for social accounts. Ask yoursefl - would you ever spend a whole day in a datacenter computer scrolling through your account? This isn't natural behaviour. What is natural is you using your mobile to scroll through your feed and take actions, likes, upvotes, love reacts, comments anything. And this why you need mobile proxies. True mobile proxies connect to real cell phone towers and also run on dedicated mobile devices. So the first impression here is that you are not a robot. Secondly, mobile proxies keep rotating between your IP and a general pool of IP being used by several other customers. Social media platforms refrain from shadowbanning or blocking these IPs because they could be banning anyone. This is what makes mobile proxies so powerful.