General Issues
What could be the reason:
- wrong email address
- the password is incorrect
- the user with the specified email address is not registered in the system
What’s the solution:
- specify correct email address
- be sure to type the correct password
- reset password
- check the specified email inbox to be sure it's registered in the system
- register with a different email address
What could be the reason:
- you entered an incorrect email address
- the letter got into the spam folder
- email server issues
What’s the solution:
- specify correct email address
- check your spam folder
- contact you mail server administrator
What could be the reason:
- you do not have an internet connection
- the server is rebooting
- intermediate providers issues
What’s the solution:
- check your internet connection
- you should wait for a while to reboot the server
- run traceroute command in your OS terminal, contact your ISP and provide them with this data
What could be the reason:
- not all metadata can be viewed now due to it's not implemented yet
What’s the solution:
- view full metadata list in Blynk.Console
- wait for Blynk.Apps full metadata support and update Blynk.Apps regularly
What could be the reason:
- connectivity issues
- auth token was changed
- Wi-Fi network SSID or password was changed
- old version of library or even beta version is used
- outdated ESP core version
What’s the solution:
- check if the device is powered on
- check your internet connection between the device and Blynk.Cloud (mind Wi-Fi signal strength and distance)
- connect to your device and check if it's auth token matches one in Blynk.Cloud
- be sure to use the latest version of library, otherwise re-flash and launch Device Reprovision process
- check your ESP core version is up to date, otherwise re-flash and launch Device Reprovision process
What could be the reason:
- device board hardware is not supported by the Template
- device Template ID mismatch
- wrong Template Name
What’s the solution:
- be sure to use the hardware that is mentioned in Template's Info page
- be sure you paste correct BLYNK_TEMPLATE_ID to the sketch
- be sure you paste correct BLYNK_TEMPLATE_NAME to the sketch
What could be the reason:
- some time is required to erase all device data
- there was network disconnection during the command send
What’s the solution:
- wait for up to 5 minutes and re-check device's data
- check your network connection, re-send the command
What could be the reason:
- there are no templates you can use at the moment
- there are no devices added and available to access
- device template has no datastreams allowed for automations
What’s the solution:
- create a template or ask your organization admin for it
- add a device so you can access it from Devices tab
- check for the template to have required datastreams are exposed to automations
What could be the reason:
- connectivity issues
- device issues
What’s the solution:
- check your internet connection for both: device and smartphone/PC (Blynk is a cloud platform, there's no offline support)
- be sure that device is powered on and has no circuit or physical damage
What could be the reason:
- connectivity issues
- no data for the selected device
- you have no permissions to do that
What’s the solution:
- check your internet connection
- no report can be provided for download if there's no data for it
- contact your organization administrator
There are multiple reasons why your hardware could be disconnected. In order to eliminate some obvious reasons, please do the next:
- Run
ping blynk.cloud. If your connection is good you should see the ping less than 200ms. If you see the higher ping it could be a reason for disconnections - In case your hardware uses Wi-Fi - check your Wi-Fi signal strength, and make sure there is no other noise that case decrease the signal level
- Make sure you don't use
delay()instructions in your firmware, long delay in your sketch can break the persistent connection with Blynk Cloud - Checkout your serial console output, make sure it doesn't contain crashes or other error that may lead to connection interrupts
- Make sure you don't send a huge number of virtualWrite commands per seconds. Blynk Cloud doesn't allow to send more than 20 requests per seconds. Connections that exceeds the limit are closed
Last modified 2mo ago