A free trial can still have a limited ACU allowance, and that allowance may be exhausted before the trial period ends. I can’t inspect your account usage, quota, or billing state from this chat.

Check your plan/usage page for the ACU balance and reset details. If it looks incorrect—especially if no usage is listed—contact Flux support at https://docs.flux.ai/Introduction/getting-support and include your account handle (paobe) plus a screenshot of the trial and usage status.

I can’t access your account’s ACU balance from this chat. Open your Flux account Usage/Billing page to see the current balance and reset date. If the displayed balance conflicts with your active trial, contact Flux support: https://docs.flux.ai/Introduction/getting-support.

I couldn’t modify the project, so no USB‑C-to-UART interface was created and the existing template remains unchanged.

The intended default is an FT4232H‑56Q‑REEL with USB‑C USB 2.0 protection/termination, four separate 3.3 V TTL UART headers, clocking, EEPROM, and regulated power. Note that you currently have view-only access to this template, so implementation will require an editable clone or project as well as available usage. Execution stopped because your ACUs ran out.