Which version of PHP GD Press Tools Pro plugin requires?
GD Press Tools Pro plugin requires one of the following PHP versions: . The plugin might work with older PHP versions, but they are no longer tested or supported.
Which version of WordPress GD Press Tools Pro plugin requires?
GD Press Tools 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.
Which version of ClassicPress (WordPress fork) GD Press Tools Pro plugin requires?
GD Press Tools Pro plugin requires one of the following ClassicPress versions: 1.0, 1.1, 1.2.
How old is GD Press Tools Pro plugin?
GD Press Tools Pro plugin is 12 years, 6 months old.
When was GD Press Tools Pro plugin first version released?
GD Press Tools Pro plugin was first released on March 9, 2009.
When was GD Press Tools Pro plugin latest version released?
GD Press Tools Pro plugin latest version 6.1.2 was released on September 11, 2020.
Where can I find list of changes in all GD Press Tools Pro plugin releases?
The detailed changelog for GD Press Tools Pro plugin is available here: GD Press Tools Pro Changelog.
Can I translate GD Press Tools Pro plugin to my language?

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

Does GD Press Tools Pro plugin works with WordPress MultiSite installations?

Yes. Plugin must be activated as Network Wide.