Gateway Startup Failed Raspberry

Hmm, you sure 8.1.22 works and it's not 8.1.21?

In 8.1.22 we upgraded SQLite and one of the side effects was that on ARM, it links against a newer GLIBC version (2.28) than before. This effectively ended support for Debian 9 / Raspbian 9 on ARM.

Otherwise I'm not sure what's happening yet. If the software / hardware architectures are all aligned you should at least get an attempt at starting and some wrapper.log entries to troubleshoot with.