Hello,
Thanks for sharing the screenshot of error. I can certainly rectify the issue of 503. To resolve the issue I need to dig the coding in backend, please could you share more details where I can review the code?
I am Magento developer among top 1000 Freelancer here and known for my work. I am interested in further discussion for the project.
I have expertise in PSD to Magento Conversion and Theme Development, Magento E-commerce website development, Extension/Component Development, 3rd Party Gateway/App/Plugin/Script Integration, HTML/HTML5, CSS/CSS3, JavaScript, jQuery, AJAX, Bootstrap, PHP, MySQL.
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Message me to discuss. I am online and ready to take up the project.
Thanks
Brijesh N, Magento Expert