For PC

check all service workers (mobile and pc)

edge://serviceworker-internals/ or chrome://serviceworker-internals/

F12 for open dev tools, in the console paste and hit enter.

" document.querySelectorAll(".unregister").forEach(item=>item.click()) "

For Mobile

Enable Developer Mode & USB Debugging on Your Phone:

1- Go to Settings > About phone.

2- Tap on Build number seven times to enable Developer Mode.

3- Go to Settings > Developer options.

4- Enable USB debugging.

Connect Your Phone to Your Computer:

Use a USB cable to connect your phone to your computer.

Setup PC

Enable Remote Diagnostics on the Target Machine:

1- On the target Windows machine, open Settings.

2- Go to Update & Security > For developers.

3- Enable Device Portal and Device Discovery.

Connect to the Remote Device:

In Microsoft Edge on your computer, go to edge://inspect/#devices

open the console and run 
" document.querySelectorAll(".unregister").forEach(item=>item.click()) "

For Chrome 

https://dev.to/dev0x0/using-google-chrome-console-on-any-mobile-device-9ec

remove cookies: edge://settings/content/cookies/siteData?searchSubpage