OpenEMR has several options for chat. Note that the questions may not be answered immediately. If unable to get support, then recommend using the OpenEMR Forums.
The OpenEMR Signal Chat can be found at: OpenEMR Signal Chat
The OpenEMR Telegram Chat can be found at: OpenEMR Telegram Chat
The OpenEMR Slack Chat can be found at: OpenEMR Slack Chat
New users can get account/access to the OpenEMR Slack Chat here: https://openemr.herokuapp.com/
The OpenEMR Quite Chat is a really cool new open source decentralized (ie. serverless) team chat engine that leverages the tor network. It is still in beta stage of development, but is functional. Although it will likely be highly secure in the future, would treat it as an insecure product at this point (since in beta phase of development). Can find more information at https://tryquiet.org/.
New users can get account/access to the OpenEMR Quiet Chat by clicking on this link: https://tryquiet.org/join#3ybkjxx2gattpgratdpwlx5fhyv6ju2jgcaepdqrgujfacledx4tbbyd