How to fix “Cookie check failure” or “Cookie nonce invalid”

Learn, for a better, faster, and tidier WordPress! Many tips, tricks and tutorials. I will present other useful tools as well.
How to fix “Cookie check failure” or “Cookie nonce invalid”
There are ways to trigger WP Cron either manually or regurarly and automatically.
Add custom code to your WordPress easily, with or without a plugin.
Remove the emails for administration verification.
Enable SVG support in WordPress.
How to create a gallery of images with WordPress? We’ll explore a few different ways.
WordPress has exhausted your allowed memory size? Don’t worry, and let’s fix it.
There are the PHP Error Logs? How to read them? Learn it now 🙂
How to check your Network Activity with Google Chrome to see errors from your server.
How to fix timeout errors with WordPress.