Nintex workflows not starting properly

We are facing an error when trying to start a workflow. 

At first we had the below error. 

Nintex.Workflow.NWActionExecutionException: Failed to start workflow. ---> System.ArgumentException: Value does not fall within the expected range.   

 at Microsoft.SharePoint.Workflow.SPWorkflowExternalDataExchangeServiceCollection.get_Item(Guid id)   

 at Microsoft.SharePoint.Workflow.SPWorkflowExternalDataExchangeServiceCollection.get_Item(Type type)   

 at Microsoft.SharePoint.Workflow.SPWinOESubscriptionService.CreateSubscription(MessageEventSubscription sub)   

 at Nintex.Workflow.Activities.StartWorkflow2Activity.CreateExternalEventSubscription(ActivityExecutionContext context, Guid workflowInstanceID, Type interfaceType, String eventName, String[] correlationTokenNames, Object[] correlationValues, WorkflowQueue& queue)   

 at Nintex.Workflow.Activities.StartWorkflow2Activity.Execute(ActivityExecutionContext executionContext)   

 at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(T activity, ActivityExecutionContext executionContext)   

 at System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRuntime workflowCoreRuntime)   

 at System.Workflow.Runtime.Scheduler.Run()     -

-- End of inner exception stack trace --- (Build:3210)

After enabling safe loop on the Central admin we are now facing another error that reads the below.

Following the ULS logs we find the below error. 

AutoStart Workflow: Microsoft.SharePoint.SPException: Recursive workflows are not permitted. at Microsoft.SharePoint.Workflow.SPWorkflowAutostartEventReceiver.<>c__DisplayClass1.<AutoStartWorkflow>b__0(SPSite superUserSite, SPWeb superUserWeb)

We don't know if the above is related in any way to the issue, however this what we could find. 

Can you please asist.