I noticed that the address update is not reflected in the mobile application.
 
Steps to reproduce:

1. Add mod_url with example: https://website1.com
2. Open course with moodle app
3. Click activity mod_url - ok open https://website1.com
3. Edit activity mod_url and change to https://website2.com
4. Open course with moodle app
5. Try refresh
7. Click activty mod_url - still open https://website1.com

What works?
Go to app settings > Used memory, and delete user cache.