A basic member, also known as a registration, is a member that has created a free account on your dating site by successfully completing the registration process.
A basic member, also known as a free member or a registration, is a member that has reached your landing page and successfully completed the registration process.
Your basic member count within the key metrics report is the number of basic members that have joined your dating site in a particular time period. You can view this data with preset or custom timeframes.
In order for your campaign tracking reports to generate accurate, useful data, you must ensure the White Label Dating campaign tracking script is installed in your landing page code. If you are using the WLD design tool to create your landing pages, this will already be present. If you are using a custom-built landing page, you (or your developer) will need to add this code manually.
More metric definitions can be viewed in summary here.