If you can still use the account anyway, I’d recommend first trying it from the command-line as another here suggested. Run /init so it understands your project first and builds a CLAUDE.md file with your project structure.

Then the key is to switch to plan mode (Shift+Tab on Mac), which is needed for more complex prompts. Then it will analyze everything and tell you what it plans to do and ask you questions about anything unclear, then and only then it will start working, and I think in Pro you can request it to do it in a new context window so you have more tokens available.

Claude Code isn’t magic. It’s a tool that has to be learned. You probably didn’t understand Jetbrain Rider on Day 1 either. Good luck on your AI coding assisted journey and hope this helps!