SetupVPN comes with:
- UNLIMITED and 100% Free VPN server
- No bandwidth or speed limitations.
This statement is completely a lie! It's NOT unlimited! I got the following the the add-on icon:
You have reached your daily traffic limit
Your account will be restored in 11 hours
You may consider upgrading if you want to use VPN without traffic Limit

And my registering email account got the following message:
Dear xxxxxxx,

we had to block your account 'xxxxxxxxxxxx' temporarily because of over-usage of your free account. Our accounts are free until a certain daily limit, then your account will be blocked until next day. This way we plan to give fair free service for all our clients.

Your account will be enabled 2018-Jul-18 12:12:37 GMT (London Time) automatically from our system. You will receive sepearate email about releasing your account. You can start using your account tomorrow at this time again.

You have generated 1220 MB traffic but at this time you are allowed to make maximum 800 MB.

Premium accounts are allowed to drive unlimited traffic. You might consider upgrading your account to Premium.

Warning: you are not allowed to have multiple accounts per user based on our Terms and Services.

2018-Jul-17

So basically the daily traffic allocation for the free account if 800MB. Its sister VPN - the Hoxx VPN probably has the same limited daily traffic allocation too.