Unable to Share with External Users

I am working on sharepoint online tenant, and i am unable to allow member users to share the sites with external users. here is what i tried:- inside the tenant we are allowing external sharing + anonymous linking. inside the site collection access request we have the following:- enter image description here now i login as a member user >> click on share icon from the home page >> type the email of an external user (user with Hotmail account, who have never access the site collection). now the Hotmail user received and email,but when he clicks on the site collection link inside the email, he will get the following error:- enter image description here so i logout from the current user Hotmail, and i went to the SP online site collection using the site owner user, click on invitations, where i found the invitation with 2 options (resend + withdraw), so i chose to resend.