Backup Strategy Not Working

I am a new user trying out Backup & Recovery at Home.

The backup is set to run Daily at 1:00 A.M., chains of full and incremental backups with 6 incremental until next full. It is set to keep 2 chains. A full backup is about 419GB.

We have had three backups as of 6/1/2020 7:28 PM MST:

Job-202005291136637_2020-05-30_02-51-58 419 GB (450,808,819,712 bytes)
Job-202005291136637_2020-05-31_02-47-37 419 GB (450,695,700,480 bytes)
Job-202005291136637_2020-06-01_02-00-49 419 GB (450,732,466,176 bytes)

Why am I getting a new full backup every day?

Thank you,
/s/ Alan Auerbach

Further to my original thread.

Not only is the system running a full backup every day rather than incrementals, it is not deleting old backups and running out of space. See screenshot of My Backups.

This is the top folder:
Job-202005291136637 1.22 TB (1,352,236,986,368 bytes)

And the three backups:
Job-202005291136637_2020-05-30_02-51-58 419 GB (450,808,819,712 bytes)
Job-202005291136637_2020-05-31_02-47-37 419 GB (450,695,700,480 bytes)
Job-202005291136637_2020-06-01_02-00-49 419 GB (450,732,523,520 bytes) I noted that this file size has increased a tiny bit since it was created yesterday.

The failed (insufficient space) backup from today is not there.

The backups are stored on the 1.70TB Disk Q. Its information is attached.

Thank you for considering my issues.

/s/ Alan Auerbach