Cannot paste in Close.io
If you cannot paste text into the Close.io app and are running Windows, make sure any web security software such as Webroot is disabled or Close.io is added to the list of known applications.
Add Close.io to Webroot Identity Shield
Webroot is known to block pasting in the Close.io app. To shut down Webroot, right click the Webroot tray icon and select Shut down protection.
Then, confirm with Yes and enter the confirmation characters if prompted. Once shut down, restart the Close.io app and pasting text should work again.
If you wish to permanently uninstall Webroot, click Start > All Programs > Webroot SecureAnywhere > Tools > Uninstall Webroot and follow the instructions.