Adding https to wordpress website

I am using Cloudflare (service that gives free HTTPS for your website) to have https on my WordPress website but when I change the site URL and WordPress URL to https://, I get a “redirected you too many times” error.

I also tried to add define('FORCE_SSL_ADMIN', true); in the wp-config.php file and guess what? The same thing happens again. I’m not sure what I am doing wrong but your help would be greatly appreciated…

I tried this solution but it doesn’t work but returns a 500 internal server error instead.

I have recently solved my issue, I went on wordpress support, found my issue and how to fix it. I installed the SSL Insecure Content Fixer plugin and chose in the plugin settings for SSL Detection, the setting that was recommended. Then, I went to the settings and set my WordPress and site URL to https://. This all together fixes the infinite redirect loop.