Unable to add Shelly Button 1 (missing icon)

I am sure somebody has seen this and knows how to solve it.

Select Use default and get this:

Only option is here to click the cross.

Trying to select a svg I made just gets me back to the Choose file option

Read the pairing instructions from the first post in the support topic. The answer in in there.

Yes, I read that comment before, but just as the person who asked it there I am unable to find “the first post in the support topic”. What support topic? I did search the forum for “Shelly Button 1” and 'Select Icon).

Would you be so kind to point me the right location?

“klik hier”

“Contact”, “Bezoek forum”