Iphone not able to connect on mobile app always reconnecting, Android works fine

I have configure my private jitsi server and set everything and seem to be working fine. The problem i have is connecting IPhones using the Jitsi App when i’m connecting from the internet… but works in the same local network… it keeps reconnecing… but when i do the same to Android phone connecting from the internet is works like how it works on the Web… My certificate is fine and its chained… Can someone help me…