Similar or Related Questions:

1.  I’m having problems when I click on the green clear activity button. A new page is not opening up for me. The clients is disappearing from the task list but the clear activity page is not opening up.

ANSWER:

In almost all computers a safety feature is setup to avoid New Tabs from opening or as referred to "Pop Ups".

If you are clearning an activity and a window does not open up for you to access the clear activity page, it is likely you have disabled pop ups.  To enable your Pop Ups, click on the following links for assistance.

• Block or allow pop-ups in Chrome - Computer - Google Chrome Help
  https://support.google.com/chrome/answer/95472?co=GENIE.Platform%3DDesktop&hl=en
  
• Firefox or Mozilla
  https://support.mozilla.org/en-US/kb/pop-blocker-settings-exceptions-troubleshooting