How To Clear Cache On Meetme App

[Discussion] Why won't app data and login delete on reinstall?

I have an iphone 6s+ jailbroken on ios 9.3.2. This is my issue. I have been using the "meetme" app which I downloaded from the app store for about a month now. A couple days ago, it started giving me a popup when I opened the app to verify my phone number. When I try to verify it, it says the number doesn't exist. These are the steps I have tried and have been unsuccessful: 1. I deleted the app from the phone and downloaded again from the app store. When I open the all, the same popup message comes up and it doesn't let me log out so I can create a new account. Even though the app gets deleted, when I reinstall it has saved all my ogin info and prferences from before. 2. I used icleaner pro to clean up my phone thinking this would help and it didn't. 3. I have downloaded cache clearer on cydia and go into "setting-general-storage and icloud usage-manage storage-meetme-and have tried to "clear cache," "reset app" and delete the app from here and it still will not reset my data once i reinstall the app. 4. I have used filza to delete the app that way and clear my preferences. after reinstalling, the app still comes up on the same verification screen. 5. I have tried downloading the app from other sources besides the app store and same issue. 6. I have tried downloading app with another apple account to no avail. 7. i have tried hard reset on the phone. No matter what I do, the app will not clear my data so I can create another account. I have no idea what else to do; I have even tried "phone cleaner" for mac os and clear all the cache and preferences that way for the app- still the same problem appears. Everything I have read online says that an official app from the app store should clear all data once deleted and reinstalled but for the "meetme" app this obviously hasn't worked. My question is this- is there any jailbreak tweak I can use to help me reset the app so it's as if I just downloaded it from the app store the first time? Or is there anyway to fix this problem? I have searched endlessly and tirelessly the last 2 days and nothing seems to work. Any help would be appreciated; I feel like I'm living in the twilight zone. Why won't this app just delete my info and let me login with a new account or restore my old one? Sorry If I posted this in the wrong section. I have been reading reddit religiously for years but this is my first post ever.