LAB, here is a translation of the passage which you seem to think means Breslovers can’t go to heaven, c”v’s.
“Halacha 7
Five individuals are described as Minim:
a) one who says there is no God nor ruler of the world;
b) one who accepts the concept of a ruler, but maintains that there are two or more;
c) one who accepts that there is one Master [of the world], but maintains that He has a body or form;
d) one who maintains that He was not the sole First Being and Creator of all existence;
e) one who serves a star, constellation, or other entity so that it will serve as an intermediary between him and the eternal Lord.
Each of these five individuals is a Min.”
Breslovers don’t believe any of this. On the contrary, they simply believe in the power of a tzaddik after death to influence the world through the tzaddik’s prayers. That the departed pray for the living is mainstream hashkafa. The Gemara actually notes that tzaddikim are more powerful after their death than before. (Chullin 7b). It is also very mainstream to visit the graves of tzaddikim.