Hi there and thank you the tips.
Other plugins that I use with “upload” features are working perfectly. Only UM presets this bug. Just to clear it up as well, i have deactivated all plugins to check if any was in conflict with UM, and that is also not the case. I use the plugin for over a year so, it’s unlikely to be any conflict with the theme, since this bug started happening very recently.
Any further assistance is highly appreciated.
Regards,
Paulo