Private proxy flagged as open proxy- Instagram

So I have had a private proxy which i have been using for social media accounts. It works well for all except Instagram where it says your ip is flagged as open proxy. I tried to search on google regarding this issue but didn't find much help. What could be the solution because maybe if i try a new proxy it may be also get flagged. Also does this mean that Instagram has banned the ip or flagging is different?
Looking forward for your replies.

Thanks

Instagram has pretty good proxy detection, sometimes they can even detect virgin proxies I believe. You can't do much in this case, just ask for a replacement and hope they don't detect the next one.

it doesn't make any difference how you call it, banned or flagged, what matters that you can't create accounts using that, because someone already used that particular ip to create accs or if it's really a virgin proxy, the whole range has been abused before, if you want proxies which are good for ig acc creation, you need to ask your provider, because those are special needs and not every private proxy is good for that, oftentimes it means slightly higher prices, if they can provide those at all

not sure how long are you in the ig scene, but this issue is around since a long time, it was already there when xgram was the shit , the following warning was written on the acc creator tab of the tool:

"Creating too many accounts per IP / creating too many accounts too quickly on the same IP may result in your IP being flagged as an open proxy by Instagram."

Yeah, I got a working proxy for the 4th replacement. Just ask for one, usually the guys at Proxy-N-Vpn or SSL private proxies are really helpful and fast.

Thank you for your replies now I got the point. Never tried instagram before, so i am new to it.