Sometimes SMS are delayed.
I have to log off & login again on the app before the SMS start going
You don't have to log out & login again from the app.
Your smartphone must be connected to the internet so that the smshare app can retrieve jobs from the smshare server (job = sms to send).
As soon as the smartphone is connected, it will receive automatically jobs. Sometimes when your smartphone is in power saving mode, it may delay a little bit this
operation.
If this is the case, you can open smshare app and click on the refresh button on the top right corner. This way you fetch jobs manually.
You can make test by sending SMS from your dashboard on the smshare site.