spinner_teSrBeen reading this board for a while, but I figured I would share what I look at before signing up anywhere. After trying maybe a dozen sites I stopped trusting the big banners.
First thing is the licence: see which authority is listed in the footer, and if your country is on the allowed list. Next come deposits and withdrawals: card, e-wallets and bank transfer should all be there, and cashout times should be listed up front.
Never judge a site by the bonus alone. Anything above 40x rollover is a red flag for me, and some games count less towards it. A useful overview with bonus rules, app info and payment methods is worth a read here [url=https://www.intensedebate.com/people/idl5hzu3te]Wildrobin[/url] so you know what you are signing up for.
On mobile I mostly use the browser version, and if there is an app I make sure it comes from the official page. Test the live chat before depositing: if they answer in a couple of minutes that is a good sign.
Hope this helps someone. Treat it as entertainment, not income.