I emailed Paletteful Packs expressing how disappointed I was with the April 2021 box and never got a response....
I was upset with the April 2021 box because the Stabilo markers are NOT art supplies. They are pens used by students to take colour coded notes, or by kids for colouring and drawing casually. I had heard good things about Paletteful Packs through all the reviews I've read and ultimately picked them as my first art subscription box. But I was very disappointed and cancelled my subscription right away and have since been turned off by future art subscription boxes.
I'd also like to mention that the paper included in the April 2021 box did not suit the Stabilo markers at all when I used water and the included brush to blend, as explained in the accompanying digital instructions. I had much better results with my own Canson watercolour paper.
I've been following the boxes after the April one and the curated supplies were much better... and I'm so disappointed that I was unlucky enough to have picked the one month where the supplies were disappointing.