EKS Cloudwatch monitoring in grafana cloud

Hello everyone, I was implementing monitoring for AWS resources on grafana cloud using cloudwatch as datasource.
For EKS I used dashboard id 16028.
However, after the dashboard is created, I cannot choose cluster name (as they are not read I guess). There is also an error 'metric request error: "WebIdentityErr: failed to retrieve credentials\ncaused by: AccessDenied: Not authorized to perform sts:AssumeRoleWithWebIdentity"

I created pipeline, which automatically creates role required (worked for ec2, rds)
Anyone could help regarding it?