Unpaid dues email not sending

Hi,
I have been trying to send an email using the website emailer to the Unpaid dues list.
All the correct names are listed on "To" and I get the message that the email has been sent,
but no email is actually delivered. I have tried 3 times and all have gone into the ether never to be delivered.
I have subsequently emailed the general "members" distribution list and that seems to have worked.

Club number: 1259807
Browser: Version 93.0.4577.63 (Official Build) (64-bit)

1259807 does not seem to be a valid club number

Sorry switched some numbers by mistake, 1295807

I am looking into this...

When you attempted to send the email, did you use the duesnotpaid-### link or did you use the Basic Follow Up Email button on the Dues Follow-up Tab? (I am trying to retrace your steps so I can determine what the issue is, if any.)

I may have to send a few test emails, so please alert your club about that.

I believe the first time I clicked on the "duesnotpaid-" link and used the website emailer, the second time i clicked on the button. Neither worked. I have not seen any test emails from you.
The only test I did not do was to copy the duesnotpaid email address into my gmail and try and send from there.

Thanks for your help!