Hi ​@Sajid Rasheed 

Help link managing Zap app connections: https://help.zapier.com/hc/en-us/articles/8496290788109-Manage-your-app-connections#h_01JX27R7X7KGS5328107AC91G9

Zap app connection issues are usually related to the app itself.

Really a case by case basis per app as there are many different reasons.

Could be due to new app API versions, etc.

Apps can have different connection limitations:

• some have max connection limits
• some have connections that expire after N days
• etc.

Common app authentication issues

Authentication issues can occur due to several reasons:

• Incorrect credentials: Double-check your username and password for typos when connecting your app. 
• Insufficient permissions: Ensure your app account has the necessary permissions and paid plan. You may need to contact the app’s administrator for assistance.
• Expired app connections: You must reconnect your app connection if your password changed recently or if your organization enforced additional security controls. 
• Two-factor authentication (2FA): You cannot connect some apps if you enable 2FA.  

For more troubleshooting information, review these articles:

• Can’t access or use Zapier with other apps.
• App connection error: “Not authenticated” or “Unauthorized”