Please follow this article if you are looking to deploy Data View Tools package tenant wide on SharePoint Online or SharePoint 2019
IMPORTANT: In order to use and install our Data View Plus app within your site using wizard, you first need to be a Tenant admin or Global admin to install our apps in your tenant.You can install our KWIZ Data View Plus by using our KWizCom Apps Setup Wizard
(please watch the tutorial video about the wizard: KWizCom Apps Setup Wizard)
Now you can add any of the Data View Toolset web parts to a page.