Yes, currently there's generous 10GB a day (24hr period). That should be enough for about fifteen 4K videos a day or about 30 hi-res photo sets. The way the monitoring software works it also counts streamed video content within your daily allowance. If you go over your 10GB daily allowance you will not be able to download or stream any content for the next 24 hours. You will still be able to access the site and view photosets.
I wish I didn't have put this cap in place but there's been so much piracy on the site that this is just one measure I've put in place to try and reduce the damage the theft of content does to the site. Unfortunately it sometimes inconveniences genuine members and I'm sorry about.
At the moment I'm spending over $400 a month employing someone to get photo sets and videos removed from file sharing sites and the like, and it's a never ending process. This doesn't only impact on me but also you - the member. Without this lost income and additional expenditure I could afford to put more photo sets and videos out each week on the site for paying members. These people are stealing from you, as well as me.
When you go to any set you will see a 'favorite' button you can click. Do that and then to view your 'favourite sets' go to the 'heart shaped' icon at the very top of the page and click that and it will show all the sets you have selected. You can remove sets from your list by returning to the set you wish to remove and clicking on the 'favorite' button again which will be saying 'unfavorite'