Sheila Otero Rivera, founder of MaxBilling-Puerto Rico By THE STAR STAFF Sheila Otero Rivera, a well‑known businesswoman from Morovis and founder of MaxBilling-Puerto Rico, announced on Sunday her candidacy for president‑elect of the United Retailers Association (CUD by its acronym in Spanish). The election will take place during the organization’s Annual Convention and Assembly of Members at the Wyndham Grand Río Mar in Río Grande on Sunday, Sept. 13. Otero Rivera, who currently leads the…