Breakdown by channel widget - I see Email and other channels in the legend but there is no value for it in the pie chart for Website Leads?

The list of channels depends on the sessions data we receive from Google Analytics for the time period selected. It is possible that there are sessions for a channel but no website leads generated during this period. In this scenario, the channel legend will be available but there will be no data for website leads for such channels.

For example, take a look at the ‘Email' channel and its contribution towards website leads. Currently, 'Email' is turned on and website leads count is at 354. Now, let’s look at website leads when the ‘Email’ Channel is turned off.

Despite the ‘Email’ channel being turned off, website leads stay at 354.

This is precisely because no website leads were generated during the time frame selected from the 'Email' channel.