Fix canonical URLs, and other issues on orchard website

Brief:
I need a web developer who understands the orchard site builder to help fix several template and display issues. I have tried to update items myself but the site does not show the changes correctly, so I need expert support.
Work Required:
• Fix the canonical URL problem, each page must output a self-referencing canonical tag
• Only the homepage should use the homepage canonical URL
• All other pages must generate their own correct canonical URL
• Fix spacing problems across the site, some sections do not align correctly
• Fix image layout issues, some images display with the wrong size or spacing
• Update the favicon and confirm it is showing live across all pages, on both desktop and mobile
• Confirm changes are cached and displaying correctly
What I need:
• Someone who can diagnose template issues quickly
• Correct the root problem so future edits update properly
• Provide a short explanation of what was fixed
Timeframe and budget:
Flexible, willing to pay for solid technical work that resolves the issues fully.