I have had the same friendship group since university, 4 girls, and everytime it is one of our birthdays, we all put some money in to get each other a present. My birthday was in November, one of them asked what I might like, I sent some links, but in the end they didn't get me anything. I didn't think that much of it, I figured we are pretty old (30+) to still be doing birthday presents now anyway. Then a message comes through for a collection for another girl in the group who has a March birthday. I mentioned to one of them that I think they may have forgotten my birthday and she said sorry she has got a present but there was a delay with delivery with covid and she will give to me next time she sees me (we have no idea when this might be though with lockdown etc). Then got a thank you message through from the girl who had a birthday in March today saying thank you her presents arrived on her actual birthday, so the same girl had bought and sent presents to her address. I don't know whether to be slightly upset or just let it go?!