So the emails are being received by your Spark email client but not showing in Gmail client since you switched? Check your email rules in your GSuite account. Sometimes they can be quite restrictive. Double-check your spam folder or try changing the email address on the formit call so they are sent to [email protected] instead, see if they are being received in that mailbox. Also, check the error logs, sometimes phpmailer issues.
On another note…
What email address do you have assigned to [[formit? &emailFrom =``]] , if blank what email are you using for the system setting [[++emailsender]]? I highly recommend that either emailFrom or emailsender are filled in with a real email address that’s allowed to send from flyfisherman.com. i.e. markus@flyfisherman. This will reduce the likelihood of any SPF/ DMARC violations.