According to your log our plugin is working fine but an error happens once it tries to get to the captcha.
This must either be an errormesage from your firewall or ISP ... or keep2share had issues when you tried but in this case it would have to work fine now:
Code:
--ID:79TS:1580447799238-31/1/20 10:46:39 AM - [jd.http.Browser(loadConnection)] ->
BrowserID:7|RequestID:2|URL:k2s.cc/api/v2/reCaptcha.html?id=CENSORED
----------------Request Content-------------
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>URL Blocked!</title>
</head>
<body style="background-color:orange;">
<br/><br/><br/>
<center><h1 style="font-family:verdana; font-size:42px;">The URL you're trying to reach has been blocked!</h1></center>
</body>
</html>
I've checked the exact URL from your log and I can open it here without any issue and it will display the captcha.
-psp-
EDIT
This might have happened because this one captcha request used http instead of https --> Please check that. if possible (thx raztoki).