I need to add my rental property income but when I press the "START" option, it keeps buffering and then goes back to the same page.

If you are filing with TurboTax online, let's do these steps: 

• Check your internet connection.  Try to log out and sign back in the program. 
• Clear your cache and sign back into the program.   To clear cache, click here: Cache
• You may also try a different browser.