95% sure you have a CORS issue with the "dalliard.ch" endpoint: 
Discussion
that doesn't look right — will take a look
Can you check if I have the same issue on eluc@bitcoincoin.ch LN address ?
you would need to set that as your lightning address in your nostr profile in order to test it properly
I just set it back to eluc@bitcoincoin.ch if you had a minute to test.
yes looks like it works.... looks like you are in French-speaking Switzerland?
I've got great memories of summer in https://en.wikipedia.org/wiki/Les_Diablerets here
Nice resort. Did ski there for a long time.