What should I do if a free Blogger template causes display issues or breaks my blog's functionality?

If a free Blogger template causes issues, first, revert to a default Blogger theme immediately. This will restore your blog's basic functionality. Then, review the template's documentation (if any) or look for common issues reported by other users. Check for conflicting scripts or unclosed tags in the template's HTML, especially if you've made manual edits. If the issue persists, consider trying a different, more reliable template, and always remember to back up your blog before making major changes.