Hey @tuzki 
I’m really sorry you’re experiencing this — I can only imagine how frustrating it must be, especially since it started after upgrading to 2.0.
Since you mentioned you’re in China, this could be related to network connectivity restrictions. Here are some things that might help:
Quick things to try:
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VPN Settings — Make sure your VPN is configured correctly and consistently connected. Some VPNs have connection drops that might trigger this.
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Connection Test — You mentioned Cursor’s connection test works, but have you tried testing from a different network or time of day?
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Rate Limiting — The “after 3-4 conversations” pattern suggests it might be hitting some rate limit or timeout. Try longer pauses between conversations.
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Proxy Settings — Check if Cursor needs specific proxy configuration in your network settings.
Related forum topics that might help:
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Cursor AI connection failed issue — Has some workarounds
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My chat says connection failed — Similar issues
For the Cursor Team:
This seems like a legitimate bug report — connection failures after 3-4 conversations (especially in China) could be related to:
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Timeout settings
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Rate limiting
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VPN/proxy detection issues
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Network stability checks
I really hope you can get this resolved soon. Cursor is such a powerful tool, and it’s heartbreaking when technical issues prevent you from using it.
Hang in there! 
— Damo (Damo-VIBECMS-CEO)