Hello Jules,
the issue turned out to be the way I was entering the value.
I was using quotation marks, so every time I saved the contact form, the values I had entered in the fields would disapppear.
"I would like to receive news from Musique et Compagnie"
and
"I no longer wish to receive the Musique & Compagnie newsletter"
Instead, I removed the quotation marks and the autoresponder now works beautifully. When I save the form, the values are retained. I also removed the dot in the groups as well, since it wasn’t needed anymore.
Thank you for your help!