Not sure why it would warp there, perhaps infill percentage is too high?

If you don’t need the layer lines to be in a specific orientation I’d consider rotating the model back 90° for the reprint, hopefully that should avoid any warping.

^^ Heroic worked really well for me as well. I used it to get Affinity working. (Apart from using it for Epic Games and GOG ofc.)

I mainly search on makerworld or printables or make them myself depending on what im looking for

I’ve tried Vivaldi mail. Might be something for you, but I just didn’t like the UI so I’m also still using the web interface for each. Looking forward to seeing others answer as well.

Excited to see how the INDX will pan out!