I don't think thge credit card companies care about the DMM site because it's in Japanese and the prude American groups that try to fight online porn don't speak that anyway, whereas the R18 site is in English. In the past they'd just replace certain words with *** even when they weren't sexual...
One site claims this as translation for Zubo: SFX for jamming something inside of something else, like an arm into a vending machine.
So zubozubo would be ramming it in repeatedly. I'd probably translate it as pounding or something similar.
Sure, the subs are very low quality. However, they're good enough for me to understand the story and after a bit you get pretty good at knowing what their weird translations should actually be, so for me it's still better than no subtitles at all.
These forums have a seperate section for identifying movies and actresses, please use that next time: https://www.akiba-online.com/forums/jav-idol-identifications.121/
The movie you're looking for is JUC-525 and the actress is Risa Arisawa 有沢りさ.
The movie doesn't have a code as such as it is not JAV. It's from the French studio Jacquie & Michel Elite. Her name is listed as Shiori and this is the cover of the DVD:
This is her sougouwiki page which lists a bunch of her movies:
http://sougouwiki.com/d/%ba%e3%cc%da%a4%eb%a4%ca
Looks like she uses several different names for different studios.
The scene is from Family Affairs XV-55, an uncensored JAV starring Mao Sakurai and Sakura Sakurada or Kachou Fuugetsu. The second actress is given two different names on various sites and the cover doesn't list names.