I think since start, This is what I found upon searching this information
Bitcoin sports betting is on the rise, and Cloudbet is the leading crypto sportsbook for bettors looking to wager with cryptocurrency. As the most trusted platform for bitcoin betting since 2013, Cloudbet offers unmatched security, excellent odds, and high limits up to 12 BTC.
I guess so but don't know they began with only sports bet or with sports bet as one component of their platform. In gambling industry, a company can start with a single product like dice then expand their business to more games, partner with game providers, include sports bet. Only Cloudbet team can confirm it or forum members who used Cloudbet in 2013 when they began the business and joined the forum because description like you found can have buzz words.
Maybe they already got sustainable costumers count that's why maybe at some point they decide to stop their campaigns.
They possibly made decision based on data, that we don't have. Reasons can be different like, stop their signature campaign because they see customer base is enough; or they can stop their campaign because (from data), they see less and less effects from same money spent for campaign.
But also I guess for deciding to stop their campaign then provably there's a lot of things has been affected and for sure with their current situation I guess they don't really have any plan for expansion. But if they could able to market their casino then I guess they could able to gain more users especially that online gambling became so popular these days.
Many factors like bull and bear market will affect people budget for gambling but lack of marketing, advertisement can have effects on their brand appearance and customer base change recent years.