If a member accrues some notifications about a post, and then the post gets deleted, when the member clicks through from the notification to see the post, they receive an error message "Sequence contains no elements".
The error message needs to be more descriptive about what has happened.
It would also be an improvement if notifications were deleted or replaced by a "post was deleted" notification when the post they refer to is deleted. (An error message when clicking through to the post is still required, even if the notifications get deleted, because members could have outdated local copies of notifications in their browser while they are logged in.)

Grokio Team will discriminate you if your gender is male, by their own admission. I have been the target of hate/harassment by extremist trolls that infest the community (reported by many), which I denounced to the staff. Not only the staff refused to investigate them, but they banned me for 1 week for posting a rant about women, in which the worst I said was that they were "cruel". I protested with Grokio staff for this gross injustice, from censorship to receive a 1 week ban when the real heavy offenders I denounced were left untouched.

Since I never received such unfair treatment by the staff of any community it became evident to me, also by the wording they were using, that I was discriminated by Grokio staff because of my gender, which they finally openly admitted. I quote them: "Men are not a protected group and have run society for thousands of years. Therefore misandry is not against our hate speech rules".

In conclusion, if you are a man and are the target of harassment/hate, Grokio staff won't do anything because they think you deserve to be punished because of your gender. This is the reason why black squads of LGBT trolls infest the site and their harassment/hate is not punished, like many reported here. Grokio team is on their side. On the other hand, if you are a man and you dare to say anything negative about women, even just that they are "cruel", you'll get banned immediately and treated like trash by Grokio team.

The paradox is that big part of the earnings of this company come from men! The gender discrimination I suffered was not from some random angry support person, but from the co-founder of the company (at least the person I interacted with qualified as such). Discriminating people based on their gender is not just a terrible community practice, but it's against civil rights.

I have photographic proof of what I said, in case it's required.

There is a group of folks on your site who are actively out and about trolling other members for completely ridiculous reasons. While they claim to stand for good things (speaking up against transphobia, racism, etc.) they often times get way out of hand. They are vigilantes running rampant and ganging up on people with opinions they don't agree with, even going so far as to make a few folks leave the site to get away from them.
Bring those people to justice. Refine your rules so things like this don't happen. No one should be attacked or made fun of by entire groups for spelling errors, honest mistakes, or "furry cringe" so bad they don't want to be a part of this furry community.
DO. SOMETHING.

I've noticed that when people upload art now, users are telling them they have to credit the artist, even if it's themselves.

If true, Ferzu should just add an Artist field. When you upload an image or edit its caption, the Artist field is required.

There could be three bubbles. A bubble for "Photo", a bubble for "I'm the artist", and a bubble for "Not my art". If you select the last bubble, you have to fill the artist's name in a field.

Then the system could automatically display the artist name or "user's art" depending on which one they filled in. (It would display nothing if they select Photo.)