martinus-Amember The download link doesn't work at the joomlart page... the reason why I should download the version you mentions is a bit blurred for me as I am using ver 1.3.3 at the moment!!!?
The download link works fine as I have tried downloading the latest version (1.3.4) for JA Social feed plugin from here
The reason being stated herewith to download the latest version are bug fixes and features/security/varied improvements and to make the specific extension compatible with ongoing latest Joomla version/PHP version, if issues encountered.
Usually, Updates are rolled with fixes or improvements after taking into consideration, several feedbacks or issues being faced which had been reported by members on ongoing basis
Would kindly suggest to update your plugin version after taking backup of your site in order to see if issue resolves. Also, To be precise, Kindly elaborate on the issue if still it persists