Subscriptions do not activate

Hello,

I've been having issues with our Woocommerce Subscriptions on our live site for a few weeks now.

Since I updated Woocommerce and Woocommerce Subscriptions our new subscriptions are not being activated.

The initial order is properly processed and payment is received, but the following hooks for the subscription payment are not being fired.

woocommerce_subscription_payment_complete
woocommerce_subscription_status_active

This happens no matter which payment platform is being used (Stripe, Woocommerce Payments, Free Subscriptions, Manual Renewal).

Renewals are properly processed for orders created before the update. So the Action Scheduler seems to be working fine.

I have tried disabling various plugins, clearing caches, creating new subscription products, reviewed the site security settings without any luck.

This is a really big issue because we haven't been able to have active new subscribers for more than two weeks now.

Really hope someone can shed light on this issue, we're losing money every day...

Thanks !