Check your internet connection first — open any other site to confirm you're online. Clear your browser cache and cookies, then restart the browser. If you're using the mobile app, force close it completely and reopen. Try accessing Claude from a different browser or device to isolate the issue. Sometimes browser extensions interfere with the service, so disable them temporarily and test again.
This usually happens when you hit rate limits or context windows. Wait 30-60 seconds before sending another message. If your prompt is very long, break it into smaller chunks. Refresh the page to reset the conversation state. Check if you're on a free plan with daily limits — you might need to wait until the limit resets.
Your browser might be running out of memory if the conversation is very long. Start a new chat to free up resources. Close unnecessary tabs and applications. Update your browser to the latest version — older versions handle complex web apps poorly. On mobile, restart the app and clear its cache through system settings.
Verify your card details are current and haven't expired. Check with your bank that international transactions aren't blocked. Try a different payment method if available. Log out completely, clear cookies, log back in, and attempt payment again. Contact your card issuer if payments keep failing — some banks flag AI service subscriptions as unusual activity.
High server load during peak hours causes delays. Complex prompts with code or long documents take more processing time. Simplify your request or split it into parts. Switch to a different network if possible — mobile data sometimes works better than congested WiFi. Restart your router if other sites also load slowly.