I'm using Trading212, I was surprised when I saw they went so low. The main reason I want to find another (or perhaps many others) is because I've had some negative experiences with every broker I've been with so far (with Trading212 being the least negative). Some brokers keep your trades locked at 11 at night (the time the Dow opens back up after the hour break after the official close). They keep them locked when they are in profit (then they tell you later that it was a price misalignment). None of this has happened with Trading212 yet, in fact after being with them for months now, it has only been down and offline once (for about 30 minutes).
My only reason for doubt in them (and any broker for that matter) is they always decline to add an upper trade limit feature. It's very easy, especially if you're making more than 30 trades per day to press the wrong button. Then instead of putting in 0.01, you have a trade of 1.0. One day I put in a trade of 5.4 instead of something like 0.02. What I do remember was none of the figures entered in were anywhere near the figures I wanted to enter on the keyboard, which makes me very skeptical. Not to mention, 5.4 was almost the exact size of my account. I was very lucky that it immediately went into profit.
Providing the upper trade limit feature cannot be a difficult thing for them to do, the question is why not, which is why I really feel like they are not much different from the broker types mentioned above. So my plan is to have a few brokers, and alongside these, money in the bank to fund accounts under pressure, rather than all my money in one broker.
Brokers also have a position limit of 250, so if you want to add you must close one and add twice the size as before (I got frustrated and added loads many times the size) and lost about 70% of my account a month and a half ago when the Dow rose about 2000 points in almost one day. Having many brokers takes the pressure off each individual one, and less panic I would imagine. Especially if one broker has an open time issue you can just add opposite positions on a different broker, and that will be the same as closing them on the original broker.
I'm just sick of being ruined by these kinds of situations