Hi there @a.donchenko ,
Thank you very much for sharing the specifics of your implementation and connectivity issue.
I did the initial research and found this Knowledge Article about timeouts.
I’m aware the KM references AWS while you host your application on Azure, but it’s likely that Azure and AWS share architectural similarities, so you could try to apply the suggested in the article solution.
Please let me know if that sounds good to you and if you have follow-up questions 