First of all, thank you for this great extension that provides an interesting replacement to the late Fieldsattach.
I have a problem however: the pagination is not working. No matter which result page you try to access, it's always showing page 1. The url is correct (limitstart=10, limitstart=20, ...) but it's always the first 10 results showing.
The template select option does not work either (maybe it's related): the "card" display is briefly shown, then it reverts to the list display.
It's not related to the site template as I tested with the Protostar template and there is no JS error reported in the console.
Joomla! version is the latest (3.9.3) - module version is v1.2.1_b0004
Well I switched to "Joomla router" and indeed it seems to have done the trick!. I was afraid it would mess up all the URLs I have already, but apparently no. It's probably because they were all already recorded by sh404SEF.