Apps stopped working, nothing helps

[Windows Central Question]

I have Lumia 550 and apps used to work just fine. Now WhatsApp and many other apps just wont start. WhatsApp just says loading but nothing happens after that. I reinstalled it, booted the phone, wiped the system and reinstalled it. Nothing helps. What can I do to fix it?

 

[Ryujingt3]

What OS build are you on for this to happen? Also, if you update all the apps to their latest version, do you still get this issue? How much memory is being used on the phone and how much free space is there? Lack of resources on the device may also cause what you are experiencing.