Foreign-owned single-member LLC (New Mexico) receiving AdSense payments — Is Form 1040-NR required?

Hi everyone, looking for clarification on Form 1040-NR for my specific situation.

My context:

• Single-member LLC, New Mexico, disregarded entity
• Foreign-owned (Spanish tax resident, non-US citizen, no SSN/ITIN)
• The LLC's only activity is receiving Google AdSense payments into a Mercury bank account (US-based)
• I periodically transfer funds from Mercury to my personal Spanish bank account
• No US employees, no physical presence in the US, no other income sources

What I already know:

• I must file Form 5472 + pro forma Form 1120 annually
• I am not engaged in US trade or business (no office, no employees, no US clients)

My question about Form 1040-NR:

1. As a foreign owner of a single-member LLC receiving only AdSense payments, do I need to file Form 1040-NR?
2. Does it matter whether AdSense payments come from Google Ireland Limited vs Google LLC US for this obligation?
3. If AdSense payments are considered US-source income, does that automatically trigger 1040-NR?
4. Is there any scenario where a foreign-owned single-member LLC receiving only AdSense payments would NOT need to file 1040-NR?