After solving the little gallery problem without any complication (thanks to Umeastro), I confirm my decision to shift most of my activity from DeviantArt to NewGrounds.
The reason why it's happening just now is because DA is changing their rules and policy again, but this time with the promise to wipe out all NSFW material and everything close to it from the website; many of my artworks (and those of people I know there) seem to belong to the "everything close to it" category.
I already started this change by making my very first NewGrounds post yesterday, and I'd like to force myself to make more of them to keep my account active.
Also, I gathered some of the old artworks I made but didn't post here (only on DA), with the intent to upload them one by one.
When I get some more time, I should also update my Collabinator post and create a new Commission sheet. There's a lot of things I should do.