Firefox and photo uploads

[badshoehabit]

For the last couple of weeks I am unable to upload photos to various websites (Twitter, Facebook, ebay) without problems. Sometimes I get 'failed to upload' error, sometimes the pic will load but the page refuse to update (100% on Twitter). Cleared cookies and cache, restarted Firefox, restarted MBP - still problems.

Works ok with Safari but Photos won't even open with Chrome. Mojave 10.14.6

Any suggestions, please?

 

[badshoehabit]

Ha, found it - had VPN installed for streaming FI. Disabled and photo uploads restored.