Latest Esys was easy to get, but yes the "tokenmaster" code generator, whoever he is, seem to have gone away.
I paid about 10GBP for a key off ebay, worked fine for 2 years now. (had free version for 8 years before that)
example:
https://www.ebay.co.uk/itm/BMW-E-SYS...oAAOSwMiFfYQy2