Either nothing happens or you get an error message:
Upload failed. We could not connected to the Internet or an anti-virus/browser-extension is blocking file uploads. If this persists, please note what you were trying to do and contact us.
Reason: Likely an antivirus, such as BitDefender, is blocking uploads to encyro.com.
(Another possibility is that the file is too large: see why attaching a file fails.)
How To Fix
BitDefender's "Online Threat Prevention" feature can at times incorrectly block uploads. To fix, add www.encyro.com to BitDefender's allowed or safe list.
Instructions from BitDefender: https://www.bitdefender.com/support/bitdefender-is-blocking-a-safe-website-or-online-application-1795.html
(Additional information for other versions: https://www.bitdefender.com/consumer/support/answer/1519/)
In short, when you get a warning the the one below, click "Manage Exclusions"
Then, click "Add Exclusion" on the MalwareBytes window that opens.
On the next screen select "Exclude a Website" and click "Next."
Under "Exclude a URL", enter www.encyro.com
Prevent future false detections
Also, report the false positive (that is, an erroneous detection by MalwareBytes) at: https://support.malwarebytes.com/docs/DOC-1413.
For AVG, please see these instructions to set exceptions for Web Shield or Website Shield.
For help finding the relevant instructions for other antivirus or browser extensions, please contact us.