Help! Google is not indexing my site!!!

Hi,

My client has a main site and shop subsite I built for them. getting no traffic to the shop, just realized that Google is indexing the main site, but not the shop site!!!

main site
Moderated site link on request

shop site
Moderated site link on request

I have Yoast on both, I have the Google tracking # in both, but Google not indexing the shop site at all. Please help cause client is expecting traffic and sale and there's none!!!!

How come google isn't indexing the shop site please?