I've had no real issues with signal start. Firstly my experience with autotrader.
I used autotrader a years ago and lost thousands to firstly not knowing what I am doing, real novice, and also closing the account without checking if all trades were closed - they weren't, I assumed if you are linked and resign from autotrade, all trades would be closed. I closed my laptop and never opened the platform until months later, being down a HUGE amount. I received very little sympathy... but we move on...
Signalstart has many more quality signals but you pay, of course. No issues yet, but to set your desired min/max lot size compared to the providers historic min/max lot size takes a bit of manual calculating. The 'multiplier' is rubbish, it gives you more hope & useless info than real facts that you can use. Lot size and risk is everything.
You manually should check what the provider's balance is, see historically what their min/max lot size was that they used, get a ratio and apply that ratio to your own balance, knowing what your comfort min/max lot size should be taking margin level, your balance and your stress tolerance is. Then only you can apply the multiplier with confidence, in fact DO NOT put on live trade until you had a couple of trades on your DEMO account to understand how each provider trades. Only then you can play with the multiplier for each and every different provider to set to your needs.
I honestly have been profitable, by firstly being very conservative in at least a week for each provider (low lot, but never let it go 'under 0.01', which if a provider uses 0.01 as his lowest lot, setting your multiplier too low, let's you deal in too many 0.01 lots, when actually the provider meant to go e.g. 0.10, then some 0.03, then many 0.01 lots. If your multiplier is too low it may be 0.03, then only 0.01 lots, which may (not may will) go against his strategy and you will lose for sure. Now that is all in ratio with your own balance. If you have say $1000, but the provider only has $100, all sorts of havoc can happen if you do not know how these ratios work. I have a healthy balance and trade not more than 0.3 to 0.5 lots per trade, which still ends up to be a good low % per trade/total trades for MY balance, everybody is different.
NOW the next is the secret of signalstart (or any autotrader, signal service):-
Carefull, when subscribing to a provider, UNTICK the box to take current open trades. The trades may be already at the dead end of a big loss and still getting bigger loss, rather take new trades when they arrive. Big losses is possible with this, I already asked them to default this box to UNTICKED, but not happened yet.
You absolutely need to view historic trades of AT LEAST a month of any signal service, longer if there are only a few trades per month. If your desired signal service can't/won't/does not have historic trades, verified by Bluefx, mql5, myfxb, FORGET IT, move on. That would be silly to read through their marketing material which are 222% lies and manipulation. Money talks, bullshit walks. Autotrade and Signal Service have enough info for you to be able make a fair decision of how providers trade.
And then the crux. Some traders do not mind big drawdown for big profits, that is an aggressive style of trading and not if you have money to lose, it is slightly like playing or gambling, but some can make short term big bucks. My money is a true investment, so I look for low drawdowns for fair returns. But it does not help you pick somebody who has 1% DD and his return is 0.5%, let's say you want to get 5% from this person, can you calculate what the drawdown would be/could be...(homework)?
So DD% vs a good (better than average) historic returns% over a period of your choice should be your goal if you wish to grow your account slowly, but safely. I pick providers with max DD of 5% - 10% and then see, how long it has been trading, how often does it trade, are there long losing streaks and does it then martingale slowly or crazy. And I honestly can say that of the 7 providers that I have, only 2 are still under 'investigation', I am confident the other 5 will not go ballistic on loss (or win for that matter). Remember, very few are manual traders, most are EAs, but it is still a human who programs and sets the risks on it. Please DEMO first, can't stress that enough.
Also low DD filter only gives a handful of providers which narrows my choice. But remember is all relative once you use the multiplier for your trade account size and DD% will adjust as you change your risk.
And please do not think that others with a DD of higher than 5% are bad, there are some quality signals out there with drawdown of 15 -25%, just I personally can't handle it or afford it over time. Most accounts do not mind as they do not rely on it monthly/yearly like I do. Hope it helps, busy testing my own manual trading style and will be a provider in a couple months with 7% DD and monthly return of at least 15% based on $10 000 base.
If you go to bed worrying about your forex account... don't sleep. The worry never fades!