If you have encountered some common problems with Yo WhatsApp Download, Update&Use, then don't worry, I will explain the solutions to these problems in detail here.
If you want to download the latest version of Yo WhatsApp but can't install it, it's likely that your phone doesn't have the "Allow unknown sources" option turned on, so you just need to go to your phone to find it and turn it on.
If you can't find the installer in your phone, it's likely that you already have the same download package name in your phone, so you need to change the name of the installer or delete another installer, and then download the latest version of YO WhatsApp APK again. This will allow you to do the installation.