Hello.
Our team has encountered this issue before
Unfortunately, since most of the VPN cores used by other developers
have identical binaries, almost identical in terms of code and size
Apple's system or your app reviewer may even associate your app with that account
To solve this issue, you need to customize the core and fully personalize it
and provide the user with a different experience in terms of IP and .... to make the app unique
Cores such as v2ray , openvpn ,wireguard and more ...
We even received a warning from Apple for this reason, and after that we were very careful that developers who violate the rules and use public code
do not get us into trouble, and to the extent possible, customize and personalize public code whose development from scratch is not cost-effective and has no justification and makes no difference,
for your own purposes.
Good luck.