Betway doesn't offer a deposit match. No "100% up to €500" anywhere on the site. The welcome offer is 30% cashback on net casino losses during your first 24 hours. That's it. You deposit, you play for a day, and if you're down at the end of it, you get 30% of your losses back as cash. No maximum. Minimum deposit $5. Credited automatically to your cash balance.
I had to sit with that for a minute because it's a fundamentally different proposition from what everyone else is offering. A deposit match gives you extra money to play with upfront but locks it behind wagering requirements. Cashback gives you nothing upfront but catches you if you fall. One is about starting bigger. The other is about losing less. For someone who already knows they're going to play for a full session regardless of a bonus, the cashback might actually be the more useful offer. You're not chasing a wagering target. You just play.
The 24-hour window is tight though. That's not a casual "come back whenever" cashback program. You get one day. If you're busy that day or you play for twenty minutes and quit, you've essentially used your welcome offer on a small sample. Valid for 14 days from registration, so there's some flexibility on when you start the clock.