Maybe, Firefox version over 83 will not work ACC as security reason.
I don't know how to make Firefox work with ACC but
You can try with chrome, run chrome with "--force-renderer-accessibility"
<example>
run("C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" "--force-renderer-accessibility" "" "" 0x100|0x800)
I don't know how to make Firefox work with ACC but
You can try with chrome, run chrome with "--force-renderer-accessibility"
<example>
run("C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" "--force-renderer-accessibility" "" "" 0x100|0x800)