The increase after online-market expansion was concentrated among males aged 10 to 44, with almost one-third of visits ending in admission.
Minister Dale Nally cited payment firms, app stores and social platforms as possible pressure points as the transition window closes.
Nine people under 19 were able to create accounts, deposit funds and gamble.
Monthly disclosures have made the province the clearest public benchmark for Canada’s regulated online gambling market.
About 50 operators were in the mix at launch, as the province moved to a private-operator model with new revenue and player-protection rules.
The company is pairing its planned rollout with donations, partnerships and a CFL tie-up as Alberta prepares to welcome private operators.
The company is locking in accounts before the province’s regulated online gambling market goes live, while Alberta puts new rules and self-exclusion tools in place.
The casino supplier says the approval gives it time to finish compliance work before entering one of Canada’s newest regulated markets.
The company told Alberta visitors that new registrations were on hold, while Alberta’s regulator continued to ready an open online gambling market for 13 July.