Suggestion to make Conversions work with Whatsapp etc. in Browser

A big downer for me is that I can’t use WhatsApp Web if I want my conversations to be complete in ratio.

Wouldn’t it be possible to cut WhatsApp Web out of the equation and create some Webinterface similar to Whatsapp Web that connects to one’s phone/ratio, which then in turn sends out the message via its usual WhatsApp interface. This way all sent Whatsapp messages go through ratio and all received Whatsapp messages generate a notification (because Whatsapp Web is not actually used).

Hello Simonh, welcome to the community.
You can try download and install WhatsApp Web To Go from F-droid.org.
I’ve been using it for a while. It is easy to use. Give it a try!