There is a different period for fully insured vs self-funded plans.  

This comes from the settlement website:

5.  Am I part of the settlement class?

If you were covered by certain Blue Cross Blue Shield health insurance or administrative services plans between February 2008 and October 2020, you may be a Class Member.

You may be eligible to receive payment if you are an Individual, Insured Group1 (and their employees) or Self-Funded Account2 (and their employees) that purchased or were enrolled in a Blue Cross or Blue Shield health insurance or administrative services plan during one of the two Settlement Class Periods. Government accounts are excluded from the Class.

The Settlement Class Period for Individuals and Insured Groups is from February 7, 2008, through October 16, 2020. The Settlement Class Period for Self-Funded Accounts is from September 1, 2015 through October 16, 2020. Dependents, beneficiaries (including minors), and non-employees are NOT eligible to receive payment.

All Individuals, Insured Groups, and Self-Funded Accounts that purchased or were enrolled in a Blue Cross or Blue Shield health insurance or administrative services plan during the applicable Class Period will also benefit from the parts of the Settlement requiring Settling Defendants to change certain of their practices that were alleged to be anticompetitive. Dependents, beneficiaries (including minors), and non-employees will benefit from this part of the Settlement.

Question 5 of the long-form application provides additional details.  Here is the link: Long Form Notice (bcbssettlement.com)