I ditched Pinboard a few years ago because I had a lot of difficulty getting my data out and there is no support. Marciej (idlewords) snarkily brags about not answering email (https://news.ycombinator.com/item?id=23789426).
Yeah, I've read similar complaints, but I haven't had any issues.
The only data I need—my bookmarks and tags—are already backed up in a JSON file. You can get this via the API. It would be good to have the crawled archives as well, but I don't really need it. A large number of my bookmarks are probably dead anyway, and could use pruning, so an archive of these is not that valuable.