My card was charged twice by Ziopto (zioptot.com and ziopto.org) on the same day. I had to dispute it with my bank. Ziopto (zioptot.com and ziopto.org) then froze my account and said I had a negative balance because of the chargeback. They created the problem and then punished me for it.
Pros: Helpful community forum|Good mobile app|Real-time alerts|Fast execution
Cons: Limited cryptocurrency options|Alert system is basic