Unable to download any video Firefox on Mac

[CalvinEW]

Your question

I paid for a license and everything was working fine until I had to rebuild my Mac and now I can not download any video regardless of site. I get this each time:

Download failed

Sadly we failed at downloading that specific media. We try to support as many websites as possible, so it would help a lot if you could report that error (it's anonymous!).

Addon & CoApp version and details

version: 9.1.0.44
target: mozilla
channel: stable
lang: en-GB
coapp: {"found":true,"path":"/Applications/net.downloadhelper.coapp.app/Contents/MacOS/vdhcoapp","version":"2.0.19","new_version":false}
license: {"accepted":true,"email":"","key":"ead5f9baffc34a07"}
platform: x86-64 mac
UA: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:109.0) Gecko/20100101 Firefox/115.0
{
"valid_license_message_has_been_displayed": true,
"used_history_button": true,
"view_options": {
"all_tabs": false,
"low_quality": false,
"sort_by_status": true,
"sort_reverse": false,
"show_button_clean": true,
"show_button_clean_all": false,
"show_button_convert_local": false,
"hide_downloaded": false
},
"open_count_store": 8
}

[CalvinEW]

Fixed, CoApp was wrong version for Mac Mojave. Sorry for this.