Changed company name and domain and now all emails are going to gmail spam [on hold]

Changed company name and domain and now all emails are going to gmail spam
[on hold]

I work on a resume builder website that we white label. So currently there
are no problems with our existing products. However, We are working on a
new white label under the domain: onedollarresumes.com with a business
name of OneDollarResumes. The emails that we send are exactly the same as
our previous white labels, but all of the emails for OneDollarResumes goes
to gmail spam.
I have sent the email to mail-tester (the email results are viewable in
the link). According to those results everything should be fine we get a
score of 9 out of 10 and DKIM and SPD is valid. However, it is still going
to gmail spam. These are not bulk messages being sent, these are the
transactional messages (creating an account, purchase receipt, etc). What
I can change to make it past the gmail spam filters?