Ideas
I finished filing a complaint to my state's attorney general, and I'll be waiting to hear back. I'll also get started on drafting a letter to EA HQ just in case I never hear back from them. For those who may be interested in doing the same, here's their physical address:
209 Redwood Shores Pkwy., Redwood City, California 94065
My state's attorney general presented my complaint to the business but the process is completely voluntary - so it's more of a formality if they respond according to the email I got from them. Nonetheless, it might bring more attention to the issue.
I also sent out that letter and addressed it to the attention of Customer Relations. Printed out proof of purchase, proof of lacking the in-game S1 Battle Pass, and the image the official Battlefield twitter shared about compensation. That plus the letter should cover all bases and leave no confusion for whoever gets it, hopefully.
Sucks Vince has gone radio silent on Twitter since the game launched. He seemed really adamant about EA App players getting into the game and compensated.