Why are there no remains of Lord Chaitanya’s South India tours?

Chaitanya Mahaprabhu toured south India personally. But we do not have any traces of it even before 500 years. How come such spiritual influence has not attracted any permanent followers? Why LCM had not tried to propagate or make observable and logstanding effects? What was His purpose in that tour? It appears that it was of no much significant (I am making this comment because we donot see any traces of LCM’s trip like mentioning in literatures,folktales,ashrams, temples, congregations…).