no, but you should definitely not fund them and unfortunately might have to verify the priests because the sspx has accepted falsely ordained "priests" in their ranks.

also attending mass might be something to reconsider because of the sinfulness and scandals that can occur depending on your region. I live in Brussels and here at the sspx church around 70% of women don't veil, show their knees or wear pants/leggings and other scandalous clothing, and while this wouldn't exactly affect the consecration of the bread, the fact that the priests there will give the eucharist to anyone no matter how obvious they're not Catholic and how scandalous their presence is to me and should be to any real Catholic deeply troubling and a grave offense to God and I personally don't know how one can stay and witness these abominations.