Cloudflare + API not always resolving

Hey all, I have a cloudflare api at api.squair.xyz/filler running with nodejs+express. -# format: api.squair.xyz/filler/[size]/[bg color]/[text color]/[text] -# example: api.squair.xyz/filler/400x400/5099f2/ffffff/wow For some unknown reason, 30% of the requests don't get resolved (404), but refreshing a few times does make it work. Though, it works just fine on localhost. This may just be cloudflare rate limiting, but I'm not sure. If you know why, or need more info, please let me know. Thanks!