There could be a couple of reasons that might explain this kind of situation. If none of the following applies, please contact us through the chat or by emailing help@lovvett.com.
In order to receive notifications relevant to your location, the app needs to know it, so please make sure your GPS is on. Although GPS does not cost you anything, you don't need to have the location tracking on at all times; you can turn it on while using the app.
Some phones have power-saving features that may disable or delay notifications; you can normally fix the problem by turning off battery saving or optimization for Lovvett in your phone’s Settings/Battery options.
Sometimes offers just sell out before you have had time to react to the notification.
Check out Lovvett notifications settings and your filters (especially the diet filter) if you still feel you are not receiving enough notifications.