Answer:

renewer

Answer	Crossword Clue
RENEWER	Periodical receiver, periodically
RENEWER	One ordering more issues
RENEWER	Obviously satisfied subscriber

RENEWER	Publisher's best customer
RENEWER	Regenerator.
RENEWER	Renovator.
RENEWER	One who signs another lease.
RENEWER	Library user, at times
RENEWER	Pleased subscriber
RENEWER	Continuing subscriber
RENEWER	Longtime magazine subscriber

RENEWER	Satisfied subscriber, apparently
RENEWER	Longtime magazine subscriber, once per year
RENEWER	A longtime magazine subscriber, e.g.
RENEWER	One extending a library book loan