in reply to Problem submitting a web-form

is "query-seq" => on the correct syntax?

Likely not, since:

name="query-seq" value="SFssO806NA96rvTzMiLyoQ"
seems to be what would be sent by a manual submission of the form. But you should check that using the developer tools of your browser.

Hope this helps!


The way forward always starts with a minimal test.