Hi Alec,
Third-party modules are always such a special thing - unfortunately they are very often not well tested with the Odoo standard and usually not exactly tailored to the needs of many companies.
If you really want to be sure whether the module installation is secure and what the specific problem might be, you should use your own Git pipeline, which executes an auto-rollback if a problem occurs - you can then read the logs and determine what the problem is without jeopardising your productive data.
With the ‘Odoo sh’ hosting variant, this is integrated as standard - with the ‘On premise’ variant, you would have to take care of such an option yourself.
Regards,
Chris Dominiak