Make sure your browsers are up to date. The menus for browsers can and have changed significantly between even minor versions.
Chrome: as of Ver. 111.0.5563.65 (Official Build) (64-bit)
Settings > Privacy and Security > Site Settings
This subsection contains: 'Recent Activity', 'Permissions', 'Additional permissions', 'Content', 'Additional content'
>Recent Activity (should contain foresitepro.io, click on it to open the site's individual settings/permissions)
** If forsitepro.io is NOT listed in recent activity then scroll down to 'Additional permissions' **
>> Notifications: Allow
>> Pop-ups and redirects: Allow
>> Automatic Downloads: Allow
>Additional permissions (You can add FSP site for customized behavior here and in 'Content' section if you want - Recommended!)
>> Sites can ask to download multiple files: ON / Selected
>Content
>> Pop-ups and redirects: Set to 'Sites can send…' but better to add FSP site for customized behavior.
>Additional content
>> PDF documents: Set to 'Download PDFs'
You might also want to change the default download behavior here:
Settings > Downloads
>Ask where to save each file before downloading: On
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Edge: as of Version 111.0.1661.44 (Official build) (64-bit)
Settings > Cookies and site permissions
This subsection contains: 'All sites', 'Recent Activity', 'All permissions'
>Recent Activity (should contain foresitepro.io, click on it to open the site's individual settings/permissions)
** If forsitepro.io is NOT listed it's best to create a customized entry for it rather than change these settings for all sites **
>> Pop-ups and redirects: Allow
>> Automatic downloads: Allow
>> PDF documents: Always download PDF files (PDF view settings is optional, your mileage and preferencess may vary)
** If you don't create or edit an existing custom setting for FSP, then proceed to edit the above in 'All Settings' (not recommended, it's up to you) **
** You can create custom settings per site in each setting's management window ('Add' button) **
Settings > Downloads
>> Ask me what to do with each download: On
>> Open files in the browser: Off (if your intention is to only download and not immediately view)
>> Show downloads menu when a download starts: On
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Firefox: as of Version 111.0 (64-bit) (assumes 'Standard' browser privacy setting)
Settings > General
This subsection contains: 'General', 'Cookies and Site Data', 'Language and Appearance', 'Files and Applications', 'Firefox Updates', 'Performance', 'Browsing', 'Network Settings
>Applications
>> Portable Document Format (PDF): Set to 'Save file'
>> "What should Firefox do with other files?": Set to 'Save files'
Settings > Privacy & Security
This subsection contains: 'Browser Privacy', 'Permissions', 'FF Data Collection..', 'Security'
>Permissions
>>Notifications: Make sure FSP isn't blocked if listed.
>>Block pop-up windows: Create an exception for 'forsitepro.io'