PHP refer problems

I’ve got 2 problems following an installation / transfer from Blogger – apologies if these are real no brainers, I’m not the best at this!

1. When I enter my domain name, it goes direct to index.html and shows my Blogger posts and design rather than index.php with my WordPress stuff. How do I set it to go straight to php? I don’t want to delete any Blogger stuff till I know it’s going to work!
2. When I do go to index.php and try to access the archives, it goes straight back to the index.html front page, even though the URL reads (for example) https://www.neuroticcamel.com/?m=200512. What haven’t I done?

Thanks in advance.