End-customers using Lightico on an Apple mobile device, may not receive notification of a new message. This is caused by IOS release 14.2.1 update.
What to do:
It may be the case that the Lightico link is in your Messages Inbox, even though there is no new message indicator. Check for the Lightico message anyway.
If this still doesn’t enable the Lightico link to reach you, force close the Messages app after you use it (swipe up from the bottom of the screen to see all the apps you have open and then swipe up on the Messages app page).
We have found further tips for addressing this issue at https://www.macworld.co.uk/news/no-text-notifications-iphone-3799620/.