Honestly, your site functionality is pretty complex. I highly suspect you are going to have trouble finding a plugin setup that does all of what you want for free. I'm not even 100% sure that there are existing off-the-shelf plugins to do it all. Though some combo of WooCommerce Memberships and a couple other plugins might do it. Maybe a slight repurposing of WooCommerce Affiliate? Source: 11 months ago

But also I think you could use WooCommerce Subscriptions as well: https://woocommerce.com/products/woocommerce-memberships/. Source: about 1 year ago

As such, all you'd need is WooCommerce Memberships, which is 100% designed for your scenario. Source: about 1 year ago

I haven't used WP eMember so can't say how its features compare, but would WooCommerce Memberships suit your needs? Source: almost 2 years ago

WooCommerce Subscriptions and WooCommerce Memberships should be compatible with Crocoblock. Source: almost 2 years ago

Many libraries have free access to language learning software. For example, here in Portland, Oregon we have access to a free service called Mango Languages. Also, do you have a French-speaking pen-pal? There's a great website called penpalworld.com where I've made friendships that have lasted years. Try to immerse yourself in French to the best of your ability: Put your phone in French, your Facebook, your... Source: over 2 years ago

I just joined penpalworld.com to hopefully find new friends, maybe it could be something for you too? Source: about 3 years ago