While setting up your Spotinst Account - we use a cloud formation stack to register our IAM Role Policy in your AWS account. This Policy holds permissions that are needed for Spotinst's account to handle your AWS resources.
Refer the below link for the AWS arn of your IAM role:
It is important to keep this Policy updated with the latest version listed here: Spotinst Policy
Step 1: Login to your AWS IAM management console
Login to your AWS console and navigate to the IAM management console
Step 2: locate your Spotinst Policy
click on Policies from the side menu:
Search for Spotinst policy and select it
Step 3: Editing the Policy
In the Policy screen - select the "Permissions" tab, view the JSON and click on "Edit Policy"
Step 4: Verify and save