FAQ & Troubleshooting

Quick answers to the questions everyone asks. If yours isn't here, contact the team.

Data & uploads

My CSV is sorted newest-to-oldest. Will RINK handle it?

Yes. RINK detects the date column and sorts ascending before training. "Most recent" always means the last row after upload, regardless of how your file is ordered.

Why is my forecast almost flat?

Two common causes:

1. Recursive feedback dampens out fast with simple lag features. The model converges toward the running mean within ~10–20 steps. This is a property of the model class, not a bug.
2. You forecasted past where the signal is informative. Try a shorter horizon and a column with more variance.

If you see truly flat output (every step identical), you're probably predicting outside the model's training range; check that the input values you supply are reasonable for the column.

Where did my uploaded CSV go?

When you upload, the file is forwarded to the ML service and saved at /var/data/users/<your_uuid>/uploaded.csv. It stays there until:

• You upload a new CSV (replaces the old one).
• You sign out (manual or idle, after 4 hours).
• An admin runs maintenance on the ML service.

The file is never stored on the gateway or your browser.

Can I export my forecast values?

Not yet — copy them out of the workspace tiles or the chart tooltip. A CSV export is on the roadmap.

Why does my chart show demo values?

Either you haven't uploaded yet, or you signed out (which wipes server files) and signed back in. Re-upload your CSV.

Accounts & sign-in

Why was I logged out?

Three reasons it can happen:

1. You signed out manually. Click the avatar → Sign out.
2. 4-hour idle timeout. If you don't interact with the page for four hours, RINK signs you out automatically — see Idle timeout.
3. Token expired and refresh failed. Rare; usually network related.

I didn't get the confirmation email.

• Check spam.
• Click Resend confirmation email on the Check your inbox screen.
• Verify the email isn't throwaway/disposable — Supabase blocks many of those.

I forgot my password.

Use rinkglobal.com/auth?mode=forgot. You'll get a reset link by email; clicking it opens the Set a new password form. Reset links expire in one hour.

Can I delete my account?

Currently only via Supabase dashboard. In-app account deletion is on the roadmap.

API & integrations

Can I call RINK from Python / a script?

Yes — see API Authentication. Sign in with the Supabase REST endpoint, get an access token, and use it in the Authorization header for all /api/* calls.

Are there rate limits?

Not in the gateway itself. The constraining limits are:

• Groq's own rate limits on the AI assistant.
• Render Starter's CPU on the ML service.
• Vercel's invocation budget on the gateway.

For a typical beta, you won't hit any of these.

Is there a webhook for "training complete"?

Not yet. /api/upload and /api/train block until the model is fitted, which is fast enough that webhooks would be over-engineering at the current scale.

Deployment

Could not resolve host: api.rinkglobal.com

DNS hasn't propagated yet. Wait 5–15 minutes after adding the record. To test before propagation, use the Vercel-assigned URL (rink-api-xxx.vercel.app).

Render build fails with error: failed to create directory cargo

Python is auto-resolved to a too-new version (e.g. 3.14) for which pydantic-core and numpy lack wheels. Pin Python via:

• ml_api/.python-version containing 3.11.9
• ml_api/runtime.txt containing python-3.11.9
• PYTHON_VERSION=3.11.9 in render.yaml's envVars

All three are in the repo by default.

Vercel deploy: pattern "server/server.js" doesn't match any Serverless Functions

Older vercel.json style. The current setup uses an api/index.js wrapper that re-exports the Express app. Make sure your deploy pulls the latest api/, package.json, and vercel.json from the repo root.

My Groq API key was committed to git accidentally.

1. Revoke it at console.groq.com.
2. Generate a new one.
3. Set it only in Vercel env vars (never in .env files that might commit).
4. Run git ls-files | grep -E '\.env(\.|$)' — output should be empty.

Operations

How do I see who's signed up?

Supabase dashboard → Authentication → Users.

How do I see who's actively using the workspace?

Render logs for the ML service show every /upload, /train, /predict, and /data call, tagged with the user UUID. Vercel logs show every gateway hit. Cross-reference for activity patterns.

How do I clean up a user's data manually?

# On Render: shell into the service or use the Render CLI
ls /var/data/users/
rm -rf /var/data/users/<uuid>

Or call the API on their behalf with their access token.

Still stuck?

• Browse the Guides for step-by-step walkthroughs.
• Open the API Reference for exact request/response shapes.
• Contact the team.