GD SEO Toolbox Pro plugin requires one of the following PHP versions: 5.6, 7.0, 7.1, 7.2, 7.3, 7.4. The plugin might work with older PHP versions, but they are no longer tested or supported.

GD SEO Toolbox Pro plugin requires one of the following WordPress versions: 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6. The plugin might work with older WordPress versions, but they are no longer tested or supported.

GD SEO Toolbox Pro plugin requires one of the following ClassicPress versions: 1.0, 1.1, 1.2.

GD SEO Toolbox Pro plugin requires one of the following bbPress plugin versions: 2.5, 2.6.

GD SEO Toolbox Pro plugin is 5 years, 3 months old.

GD SEO Toolbox Pro plugin was first released on November 12, 2015.

GD SEO Toolbox Pro plugin latest version 3.4 was released on July 31, 2020.

The detailed changelog for GD SEO Toolbox Pro plugin is available here: GD SEO Toolbox Pro Changelog.

GD SEO Toolbox Pro plugin supports one of the following BuddyPress plugin versions: 6.0, 6.1, 6.2. GD SEO Toolbox Pro should work with older BuddyPress versions, but we support only most recent BuddyPress versions.

GD SEO Toolbox Pro plugin supports one of the following WooCommerce plugin versions: 4.0, 4.1, 4.2, 4.3. GD SEO Toolbox Pro should work with older WooCommerce versions, but we support only most recent WooCommerce versions.

Yes. POT file is provided as a base for translation in the root folder for each plugin. Translation files should go into languages directory, and WordPress must be set to your language to load the file. As an alternative, translation file can go into wp-content/languages/plugins directory.

The file name for translated and compiled MO file must be the same as POT file with the addition of language code: {plugin-name}-{language-code}.mo.

You can check out this for translating plugins using POEdit program:
support.dev4press.com/kb/article/translating-plugins-or-themes-using-poedit

Yes. Each site in the network can activate and use the plugin.