Install via WordPress Admin (best plugin installation method)
Login to WordPress Admin
In the left menu panel go to Plugins >> Add New >> Upload to install plugin
Click Upload
Browse plugin zip file (make sure either select “Installable WordPress file only” plugin zip file or unzip full plugin pack to find main plugin zip file)
Click Install Now & then activate plugin after installation.
Install via FTP Account
Use your FTP software to browse to wp-content/plugins folder to install plugin
Extract the main plugin zip file to their corresponding folders, for example Cryptocurrency Donation Box Pro.zip to Cryptocurrency Donation Box Pro and upload to server
Once it’s uploaded, go to your WordPress Admin, browse to Plugins >> Installed Plugins