Ironically, iTunes had told me it was neither in the US nor China app store, but my friend, who has a newer iOS was able to download QQ International. I am still stuck with the messed up account on my iPhone. I can no longer access the app store on my phone. It prompted me to log in, and thinks I am not signed into settings, though settings shows that I am signed in there, also in the app store and iTunes. It still gives me an authorization code in Passwords & Security. Apple Support's only solution is to reset my phone to factory settings; denying that it has anything to do with locking my id. One of their reps suggested that the prompts were phishing, though it logged me out of iTunes, and keeps prompting me to sign into the app store now. Note: it only prompted me to sign into the app store on my phone after I removed my iPhone SE from my account. I believe that it only wouldn't recognize my account after the ID lock warning in my laptop's iTunes ID lock warning (which apparently isn't a new thing for people using foreign app stores). My iPhone did prompt me to change my Apple ID password a few months ago, and had this section that said "Apple ID suggestions," and when I clicked it, it said 'ID Verification failed," though I was signed into settings. it also said "connection to server failed" or something like that. I don't know why it wanted me to change my password. It has prompted me to change my password a couple of times prior to this incident, and each time, it wouldn't let me into to Apple ID suggestions. But the Password & Security is inaccessible presumably ever since the ID Lock which seems to only have happened after I was forced to login to the China App store, but ironically, it only messed up my phone, and only locked me out of the app store, when I removed my phone from my account. But I cannot sign out of settings, and the app store still thinks I am signed out.
