I'll try to answer to your second question.

It had to be changed because Spanish government thought the original Andy Warhol cover was "offensive for the Catholic Church in Spain" https://www.lavanguardia.com/musica/20150429/54430916740/rolling-stones-recuperan-caratula-sticky-fingers-autorizo-censura-espanola.html

John Pasche, the designer of the Spanish version received a call from the record company telling him that he'd had to propose a new cover for that country. He worked with Phil Jude, photographer.

"Sister Morphine" was banned too, it was substituted by a version of Chuck Berry's "Let it rock" https://recordmecca.com/item-archives/rolling-stones-spanish-1st-pressing-sticky-fingers-lp-with-alternate-cover/