I can't access my account,this appears...why? help...!!!
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I also face the same now
Per the latest update I have from Appian at 18:39 ET, they are still working on/rolling out a solution:
"Team, We are still working on the roll out of the solution which was mentioned. At the moment, we are seeing positive results and can see service being restored to some sites. Please note that not all Sites or Integration will be accessible until the entire roll out is complete. We appreciate your patience on this."