Hi,
I will fix 504 Gateway Timeout error now .As an accomplished professional with 15 years in the field, I have an exceptional track record of resolving intricate server-related issues on platforms such as AWS, Google Cloud, and Digital Ocean - all of which provide me the experience necessary to deal with the 504 Gateway Timeout error your site is encountering. My areas of expertise span far beyond simple error identification and I can assess the server-side code, make appropriate adjustments to the site structure if required and offer maintenance to prevent such problems in the long run.
My CV isn't just limited to hosting but also plunges into developing email campaigns using a multitude of services like Mailwizz, Interspire, Sendy, Acelle, and more. This would be helpful since I can eliminate the possibility of these email systems interfering with your site performance. On top of that, my comprehension goes deeper into incorporating DKIM, DMARC, and SPF protocols to evade any chances of SPAM filtering issues.
Thank you