Question

Merkle
Merkle
ES
Merkle
Posted: Jan 21, 2019
Last activity: Mar 15, 2019
Last activity: 15 Mar 2019 5:40 EDT
Closed
Arrow does not appear
Hi, the arrow to connect 2 components together does not appear. I can not do the exercises of unit 17, 18 and 19. How can I do? Thank you.