US CPA Needed for Filing Late Forms

Title: Looking for US CPA / Enrolled Agent to file late Forms 5472/1120 for Delaware LLC (2021-2025)

Description:
Hello,

I am a non-US resident living in Brazil, and I am the sole owner of a single-member LLC registered in Delaware back in 2021.

The company had sales activity processed through Stripe. However, due to a misunderstanding of international tax requirements, I have not filed Forms 5472 and 1120 (Pro-forma) since the company was opened. The years missing are 2021, 2022, 2023, 2024, and 2025.

I need an experienced US tax professional (CPA or Enrolled Agent) to:

Prepare and file the retroactive Forms 5472 and 1120 for all the missing years.

Draft a strong, customized "Reasonable Cause Letter" to attach to the filings to request a penalty waiver from the IRS.

I have all the annual Stripe balance reports and payout history fully organized and ready to share.

Since I am on a tight budget, please provide your best fixed-price quote for the entire package or per-year filing.

Thank you!