Avast Firewall is blocking my WD Mycloud drives

[system]

Avast firewall is blocking my WD Mycloud drives…how do I fix?
Thanks.

[Asyn]

→ https://www.avast.com/faq.php?article=AVKB25#artTitle (Firewall FAQ)

[system]

I just had the same problem with my WD. Thk you so much .