Facebook recommends sending user IP in v2 (mismatched IP).

Well, There are some way to sent user IP in v2. But when you will done IP override v1 to v2 from CAPI you will see another issues which is 'same IP sending from multiple user' or something like that issues. ( It's for you have convert IP v2 from CAPI not from pixel) There is no way to convert pixel's IP

So now the solutions is you need to ignore that recommendation that Facebook showing you to send user IP in v2 mode.....

need any help DM here: https://www.linkedin.com/in/analystjahangir1/