If your links do not work, there can be a number of causes. 

The link is incorrect

You need to make sure, the inserted links is correct. If you have pasted a link from your clipboard or typed in the link yourself, an error may have occurred. 

Please check the link to make sure, the 

You need a password to acces the link

If your links are for example password protected, your leads will likely not be able to access the link. 

As such, you need to make sure, the links are available without a password and other login information. 

If your company does not have the files accessible links that are not password protected, contact VivoLead support and we will be able to host them for you at a yearly fee of 199 €.