OfferUp complaint: OfferUp CSRs and policies seem to be unnecessarily hostile

This company and their CSRs now seem to be deliberately unhelpful answering questions. And now it appears I’m personally being punished for my insolence by suddenly requiring that I provide more personal information in order to continue using the account I’ve had and used this way for years.
The whole time I’ve been using the OfferUp site, theyve steadfastly refused to create a gui that will allow users to access their site functions with a desktop computer- REQUIRING all sellers to ‘Get the App’, and to conduct all this business by smartphone ONLY.
As though the only users they want to serve are twenty somethings and etc who don’t see the world outside their handhelds.
Recently and now, every single time I log in (same email, username and pw as always, and from the same physical location), I am required to ‘send a code’ to my cel phone, in order to log in. This was only required in the past when I logged on from a different device and location. Now it’s every time.
And get this- when I did engage customer service about this, it’s what I DIDN’T see that’s a big deal now- NO Conversation history- that is, no included thread of all the previous correspondences related to the original inquiry. They are simply not there, and that’s every time now (I’m fairly certain that they did include them in the past). I imagine that’s a good way to avoid reminding users of anything that might be useful to us in our review of their conduct. Individual CSR replies were so off topic/ unrelated/ unhelpful as to suggest that they didn’t even look any further back than the single email at hand, or pay significant attention to the questions asked.
It’s hard to find and train good help- I get that. But this company seems to be engaged in a level of age discrimination, and perhaps outright hostile behaviors in my personal experience.
Who knows if any of this will make a difference- but I can’t be the only one, so there it is.
Thank you,
An Oregon user, over 50, not glued to my screens