403 Gmail auth error – contacted hosting

Replies: 0

Hi there,
I get the 403 error when I try to authorise my connection too. My URL is:
https://www.acevetsupplies.co.uk/wp-admin/options-general.php?page=wp-mail-smtp&tab=auth&code=4/cgA6R-etZMDnUi6O9kUsIjnLvTZhxkSS5RpmaVmkpxi1wQtL6MnSEBPpKHMTbaTJ6A0W4OFhiHTvdpVmsQnwvAo&scope=https://mail.google.com/

Have contacted hosting support and asked them to disable specific rules within Mod_Security as you’ve previously advised. They have come back and said “I just give you the full permission to edit the needed file and folder on WordPress, Also there is no issues from the server end as I checked the server logs and there is nothing wrong.”

Please could you advise? Having been having problems for weeks now.

Thanks!