Welcome To Plathville season 5 has explored the relationship between Kim Plath and Ethan Plath more extensively, but viewers are still wondering what happened between the mother and son regarding Ethan's infamous credit card. Throughout the run of Welcome To Plathville, Kim has had trouble when it comes to her family. Whether issues with her rebellious daughter, Moriah Plath, or her son Ethan's relationship with Olivia Plath, Kim has shown that she's challenging to deal with. While Ethan has moments where he's tolerable, the eldest Plath son is also somewhat difficult, so the mother and son paired up is a hard pill to swallow.
https://screenrant.com/welcome-to-plathville-kim-plath-ethan-credit-card-story-explained-villain/