Starting end of 2019 we have added significant improvement in the fallback mechanism, Please use minimum version below or later:

• Minimum chat SDK Android version is 1.3.11 or later
• Minimum chat SDK iOS version is 1.2.6 or later
• Minimum chat SDK JavaScript version is 2.9.5 or later

We recommend you always use the latest version of each chat SDK version. If you still having the issue or while updating the version, you can reach out to our support team so we can help you!