Here is my translation of the two sentences:
Even at the time in year 1980-90, during 20+ years of the great Qigong tide in China, I never heard of anyone claimed that she/he was or has been practicing the so called Wu-Liu pai, or an official member of Wu-Liu pai.
In current time (after year 2000), a few schools claimed that Wu or Liu or both are grand masters or great grand masters of their schools, but no schools agreed or conformed that their schools are Wu-Liu pai, or part of Wu-Liu pai.