I have a MAX BR1 MK2, I used a Google Fi data-only sim in it starting in 2019, and in 2020 they cut me off while I was out of the country. It worked fine with local sims in the Caribbean. Now we just returned to the US, and the Fi sim no longer works (not an account problem, the voice/data sim in an Android phone works fine now). We bought an ATT Prepaid 100GB, works great in an iPad, doesn’t work in the MAX. So right now I can’t get anything to work in the MAX. What are other people using??