Did they actually check your location or reached out randomly? Or, were they expecting you to relocate? I'm located in Switzerland and get often such bogus messages from German companies (although not on Triplebyte but I assume the bad habits are universal).
I think 2 companies reached out to me that said U.S. only in the job descriptions.
But I think some companies select U.S. only because Americans tend forget about other countries where people may be in the same time zone.
It's possible German companies are reluctant to engage with a Swiss person because German salaries are lower than what I understand Swiss salaries to be (German CoL is also much lower though)
