So if I'm getting this right: to reliably get notifications for application Foo on your laptop(s) and your mobile:
1. disable all notifications
2. enable application Bar
3. uninstall application Foo
4. ???
5. install Foo, disable Bar
6. enable Foo, enable Bar
7. disable Bar
8. Get reliable notifications for Baz
This works as long as {Foo,Bar,Baz} are any application name, and can be the same application name.
(Alternatively, install #KDE Connect and wish everything hooked into it)