Did you consider Steam? Desert Stalker has at least 3 characters in the "stepdaughter age". One is Ain. You can see her in my sig. You even can rename their affiliation to the MC.
Since your Story has no High school context, there should not be a Problem I would assume.
yeah DS is not comparable to THS in regards to "being off age based off looks"
That Menu screen shot show a bunch off petite young women,i'm not surprised some patreon MOD or review board flagged it if they saw that image and only that.
Not saying that the following was the intend off Erik but it is pretty obvious that some people try to push content by just labeling under-aged content as off age especially in virtual content.
or use the "3rd party" scapegoat which is most common for "the family affiliation"(incest) content.
if you try to look at things from patreon's side its all a risk/reward estimate and the scales just tipped into to high risk for them.
as cutting off Erik's patreon will probably not hurt patreon but any issue could come with underage content will cost them a lot image wise etc.
now we having played THS obviously we all know that that will not be a issue.
IMO its just the choice off models leaning towards younger & petite women for a part off the cast is the reason this got misinterpreted and flagged by patreon.
i know this sucks for Erik but patreon doing this was just a matter off time...
they may have put forward the reason off "under-aged" for it but it seems that a bunch off the users here who have experienced patreon bans before to have forgotten that "step dad x step daughter" is considered as incest and ban-able under patreon TOS.
which obviously and undeniable is the case in THS. (its even in the VN description

)
i do hope you find a way to continue
xxerikxx as i do find THS a good vn and know your content isn't incest/under-aged intended just a few people twisting it into it (point and case the recurring "fan" made incest patch causing issue's & misunderstandings)
maybe do adopt the 3rd party scapegoat for the step-father part to limit risk off being shutdown again.