#1. Elementor pro plugin
Step 1: Deactivate this plugin
Step 2: Delete this plugin
Step 3: Go to link download and download new version plugin
Step 4: Install this plugin
Step 5: Add code active into file functions.php
Step 6: Save code, reload your site
Step 7: Remove this code and check.
This code only helps to activate the plugin, so if you want to use the full functionality you have to buy a premium version
#2. To load new version theme, you need to rename your file or delete current theme version and install new version theme.
If you need to help, please send Admin web account for me, I will check and help you.