Do you have a lot of notes? It could just be that it needs time to process. I just set up an arch laptop (btw) and when I installed Joplin, it took a long time to sync everything. I’ve Got around 1000 notes.
My setup is the same as yours, except I did set up the SSL cert for my Joplin server instance.
That’s exactly what I took from it as well. It’s a survey designed to get the answers they want, not the actual feedback they’re pretending to ask for.