I spent about a half hour with Google support,until he told me to remove and reinstall my Google account and I lost the chat. It took a long time to get to that chat, but I think it is a Google problem not Boost.
Originally, I tried using a family group payment to remove the ads, my wife tried but failed to get it to work. We ended up deleting the family group but now whenever I try to pay it gives me a message to wait or ask the group manager to deny the request - problem is the request is history with no way to access it again. Google support was worthless, had me try different devices and resetting things but I tried until I was cut off after clearing my Google account and starting it again. I will gladly pay but unable to pay, all I get is a message telling me to wait 24 hours, even though it has been over 24 hours.
After we deleted the group , my wife had no trouble paying to remove the ads on her tablet, and as I wrote we deleted the family group, it is gone. Maybe if I could purchase Boost for Lemmy before I install it, things will go better. We both have Samsung S6 lites using LineagesOS 20, updated weekly. I do not think it is the tablets, Google support had me try it on my Chromebook and it was the same.
Once again, I think it is a Google family group payment problem, but thought I better mention it.
Still no fix from Google Support, they do not send the transcripts I requested each time I contacted them, I did get an email to rate Google Support and I gave them a poor rating.