A member with an old day pass is missing from Expired.

Day passes and drop ins are not counted as memberships in these lists, by design.

Someone with a pack that never expires is not in Expiring soon.

A package with no end date never expires. Give the plan a length and fix the package with the pencil on the member profile.

Export shows on the Expiring soon and Expired tabs, for roles that can manage customers.

The customer list answers the daily questions: who is this, who is coming in, and who needs a renewal reminder.

Open Customers (Members for gyms).
Type a name, email or phone number in Search by name, email, or phone….
Pick a tab: All, With upcoming booking, With active package, No package, Expiring soon or Expired.
On Expiring soon, choose a window of 7, 14, 30 or 60 days. On Expired, choose 30, 90 or 180 days or All time.
Click Export CSV to download the list you are looking at, for follow up calls or messages.

Groups are fixed lists you choose yourself, for example a launch list or a team.

Click Member groups (Customer groups for other businesses) on the list page, then New group.
Fill Group name, an optional Parent group and Description, and save.
Click Manage on the group and use Add members, or add someone from the list with the row menu and Add to group.

A member with an old day pass is missing from Expired.: Day passes and drop ins are not counted as memberships in these lists, by design.
Someone with a pack that never expires is not in Expiring soon.: A package with no end date never expires. Give the plan a length and fix the package with the pencil on the member profile.
I do not see Export CSV.: Export shows on the Expiring soon and Expired tabs, for roles that can manage customers.