i think you should be fine? ive heard of figuras main server flagging avatars that have folders/parts that refer to NSFW junk but i can't confirm or deny that. the alternative backend i personally use is "figura.nsfw.midygamy.me"
Apologies but the website the URL link shows doesn't seem to working right now (i was actually search for this one because i didn't realize it was a website link because it didn't respond) i even went and found the GitHub page and used that link but still nothing.
Was it working when you send this link or am i missing something.