Help Please | Why my IPA signed always crash on my iPhone

Hi Guys,



Recently, I met a question and therefore I'm writing to ask for your help!



I'm trying to capture network using my non-jailbroken iPhone (iOS 18.3) + Burp Suite + Sideloadly.



I prepared 5 different version Instagram and signed them to test on my iPhone. Of course, for these IPAs, they have been patched to bypass SSL pinning. I patched 3 of them and my friend patched 2 of them, and all of them worked very well on my friend's iPhone (below iOS 16).



For each of them, every time I tried to login my accounts, I could input my username, my password, and I was also required to input 2FA code, and also received email from Instagram official that my account has logged in. But when it's ready to see what after the login in, my Instagram will always crash and quit from my iPhone so that I need to start from the beginning and got into the cycle.



I have googled a lot of materials and also asked GPT, but still cannot find any reason. Is there anyone who can give me some advice or provide some help for me? Thank you!

Although I could change an iPhone to capture the network, I still want to know the reason why it happened and how to solve it

Also, I have a guess that it is because of the sign. My friend use Esign to sign these IPA but I use Apple ID to sign.