our company needs a reliable blast provider

Please can you help me with access

Please, this is necessary. The other RPC options on Blast are much less reliable than Chainstack. The ecosystem is early and mostly new projects. I.e. not pre-existing projects who are used to using Chainstack in other ecosystems, and will eventually switch over whenever the network is supported. So the speed at which Chainstack moves will have major impact on its market share.