Jack wrote:

FIPS_mode_set: 2D06C06E: error:2D06C06E:FIPS routines:FIPS_mode_set:fingerprint does not match


This error message means that your OpenSSL library couldn't validate cryptographic hash value of the FIPS module it was compiled against.
You need to fix your OpenSSL.  Alternatively, as a workaround, you can disable FIPS mode with "fips = no" in your stunnel.conf.

Mike