Ali,
@ademirsoy
You have some outdated plugins and your theme- and this will cause issues.
– Your OneSocial theme needs to be updated to version 1.2.1
– You need to update your BuddyBoss plugin MARKETPLACE to v1.4.1
– And you also then need to update your WooCommerce to v3.0.6 (or whatever is the latest version).
Please update these, make sure the WooCommerce database update is run (they will prompt you), and then test- and let me know the outcome.