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I have created a new MS Forms >> which i want to share with; office 365 users, users with personnel Microsoft accounts & users with non-Microsoft accounts. here is the settings:-

Now when i sent the link to external user >> which have gmail account >> and the user tried to login using his gmail account >> the user could not see the form + did not get any option to map his gmail to Microsoft account and get this error:-

Also when a user tried to submit the form using his hotmail account, the user get this error:-

so can we allow external users who does not have Microsoft accounts to submit the MS Form? or using their non-Organization Microsoft accounts?

Second question, instead of allowing Anyone to submit, can we share the Form with only specific people (external and internal) who can submit the form?

Thanks