On April 21st 2015 Google updated their search algorithms so that someone searching on a mobile device would get results back that gave preference to websites that were mobile friendly. This meant that someone searching from a mobile might see different search results than if they were searching on a desktop machine.
You might appear first in Google when searching from a laptop or PC, but if someone searches on a mobile device then your charity may appear further down the list if you do not have a mobile website. This potentially means your website and charity could be missed by prospective visitors.
To ensure that your website is found when someone searches on a mobile device you must make sure that you either have a mobile version of the website or that your website is responsive so that it resizes when displayed on a smaller screen.
Turning on mobile
If you use Charity Edit then you can turn on the mobile version of the website by going to SETTINGS > SITE OPTIONS.