Kee plugin for Firefox suddenly stopped working

Did something break with the latest version of Firefox or KeePass? The Kee browser extension has been working for me for years, but it suddenly stopped working the past few days in Firefox on two different Windows 10 computers.

I have Firefox 83.0 (64-bit), Windows 10 Pro 64-bit v1909, KeePass 2.46, and KeePass RPC v1.14.0.0.

This is what I see now in Firefox:

Clipboard03

Clipboard01

Solution is here:

@bat6666

I’m not the developer, and your venom was not directed at me. But, I’m subscribed to this topic, so I had to read what you wrote.

Such words are uncalled for. Please be civil. Neither you nor I pay for this product. The developer gives his time. The language you used was unnecessary, inappropriate, and unconstructive. If you want help fixing something, please describe the issue specifically and clearly. “It’s broken,” to paraphrase you, doesn’t add anything to the conversation, and it certainly won’t help anything get fixed any quicker.