HP - its a DC proxies, probably that’s why u got some issues. Currently, the best proxies are mobile/residential.
If u want to switch the proxy, your have to follow the basics steps: move the account to the new proxy, verify the account, rest it for 24 hours, start the warming process with new proxy
dont make the mistake that I made using highproxies / dc proxies for clients
Some clients got banned and they were business accounts with nightmode and easy settings
You have to make usain bolt to new proxies we recommend you 4g mobile proxies
how @Val_Vini said put them on the new proxies rest them and start a slow warm up (2-4 weeks) this time you could give your clients for free and told them that your optimize your system