WooCommerce Registration Form Not Showing

Dear,

Could you please help me?

I am using Flatsome theme and installed woocomerce version 3.1.1 to WP 4.8.

MY FIRST ACTION, I enabled the “Enable customer registration on the “My account” page” option under Woocommerce, then I clicked on “My account” in my frontpage and both login and register forms were there, as expected (plus the Nextend FB and Google connect buttons), even without having checked the “anyone can register” box under settings

MY SECOND ACTION, I unchecked the “Enable customer registration on the “My account” page” box, and went back to my frontpage to see the forms again, and only the login form plus social buttons were there, as expected

MY THIRD ACTION, I enabled again the “Enable customer registration on the “My account” page” option, HOWEVER, when I clicked on “My account” in my frontpage, the REGISTER FORM was not showing anymore

What’s going on?

After that, I checked the “anyone can register” box under settings, and took other tests like deactivating the FB/Google Social Connect buttons, but unfortunately, the registration form has not been showed again. I just can see the login form plus the social connection buttons

Could anyone give any idea how can I solve this issue? I am newbie to WordPress

Thank you in advance,
Viviane