I emailed the owner of catbox.moe about a month ago. Just like with Kek, I said I'd like to keep in touch, because we've had a lot of similar sites shut down in the past. Users have lost thousands of files without warning. But also like with Kek, I never received a response.
In the past, I encouraged users to embrace these "alt" sites. If not Imgoat, at least use another alt-image-host - as long as we were giving Imgur competition, I considered that a good thing - but now I'm a little more skeptical. I like Catbox because it allows for more than just image files, something that's still in the works on Imgoat. It also has good support on Patreon. However, I'm concerned with the lack of communication. Far as I can tell, it has one server (which it owns) in a datacenter (which it rents). Does it take regular backups? Does it remove metadata from uploads? Does it collect other user data? If so, specifics?
In conclusion: use it, but use caution.
That aside, thanks for letting me know Imgoat's SSL cert expired: it's supposed to auto-renew but, eh, these things happen. Fixed.
Regarding our financial state, Imgoat is also doing fine. I have a little over $14,000 set aside to cover hosting and other miscellaneous expenses. Once that runs out, I might have to seek outside investment, which I'm looking into, but we're good for the foreseeable future.
I made this site while on vacation in Cancun, because I couldn't sleep, and was sick of alt-sites like Slmgr going down all the time. Didn't realize how popular it would become: 13,000 registered users, 220 flagged images to go through, and 1 million uploads. Thanks so much! You're all so damn awesome!
 I've spoken with a number of potential investors; each wants something different, of course, but the goal is to keep the main image hosting service free, and never collect user data without permission. Those are our ethos and not something I'm willing to compromise on. Ideas for generating profits include: implementing a model similar to WeTransfer, selling adspace to one or two likeminded companies, etc., but so far nothing is set in stone.
 On the other hand, once we hit our funding goal, we'll be faster, self-sufficient, and can look forward to bigger and better things. I'd like for us to own our own hardware, because fuck Bezos. I'd also like to expand into other filehosting: music, documents, etc., and also implement features similar to HookTube and archive.is. Note: our homepage will never look cluttered, that's not going to change. Instead, various behind-the-scenes events will trigger based on the file or URL uploaded. Our current users, patrons, and contributors get full lifetime access to these features. It's gonna be so cool.
edit: in addition to Patreon, I'll also set up Stripe to process subscriptions soon.