Plugins are functional as can be tested in the live demos and mentioned by other webmasters that successfully use it.
Issues can occur specific to hosting and more details about why your hosting returns an error are available in error logs.
If you get specific error messages you can contact technical support to report:
https://videowhisper.com/tickets_submit.php
Your hosting may disable certain functions, permissions or run an incompatible PHP version.
In example latest version for MicroPayments uses code compatible with PHP8 but not compatible with PHP5 and older versions are compatible with PHP5 but not with PHP8. Most plugins and versions should work in latest PHP7.
Except for budget web hosts, most providers allow changing PHP version as needed. These plans are tested with the plugins for default configuration and you can also switch to own configurations for PHP7/8.
https://videosharevod.com/hosting/