Welcome to the Shopify Community and thank you for sharing your question here.
I understand that you’re unable to navigate to your website on a Safari browser as you’re receiving a 403 Forbidden error. However, you’ve tried on additional browsers and cannot replicate the error.
For better visibility, could you please share your store URL and a screenshot of the error message? I’d like to test your website on different devices and browsers to see if I can replicate the issue. With this information, we can investigate if it’s an issue rooted in the domain itself or if it’s a local issue.
What domain host are you using? The 403 Forbidden error may indicate that the domain settings are not correctly pointing to Shopify’s records. Could you double-check your domain settings within your domain provider to ensure it’s using Shopify’s records? I’ll share what information to look for/include below.
Change your DNS records in your third-party domain provider account:
Within your domain provider DNS settings, Point the A record to the Shopify IP address: 23.227.38.65
Delete any other A records on the domain if there are any present.
Once you’ve adjusted this information it may take up to 48 hours for your domain to be verified. After it’s verified, your domain is listed in the THIRD-PARTY DOMAINS section of the Domains page with the status Connected. For more information, check out our resource on** connecting your third-party domain to Shopify manually**.
Please let us know if the above steps have helped or if you have any additional questions! I’d also love to hear more about what kind of online store you’re working on.