Please, check this posts:
http://forum.mikrotik.com/t/product-request-mikrotik-should-sell-a-physical-esim-for-older-devices-or-suggest-some-3rd-party-esim/183991/1
http://forum.mikrotik.com/t/which-modems-support-esim/183840/1
By follow the instructions in your initial post, did you manage to install an eSIM on a MikroTik router? From the information in the posts I’ve shared above, directly installing an eSIM on the current models of MikroTik is not possible without changing the modem or adding a physical empty SIM card.