Bug Description
The modal for an unreachable device only mentions iOS (I'm on Android). Also the context link (https://threema.ch/faq/web_ios_foreground) is dead.

Potential Solution
- Don't limit to a specific OS
- Fix the dead link
Your Environment
- Threema Web version: 2.4.1
- Threema App version: 4.8
- Browser name and version: Chrome 102
- Computer operating system and version: Linux
- Smartphone operating system and version: Android