Abandoned loyalty points remidner is a PrestaShop addon that will inform your customers about their loyalty points before they will expiry. So your customers will have possibility to change them to vouchers and place another order in your shop.
more informations about this module you can read here:
You can find there only valuable solutions for your e-commerce shop based on PrestaShop engine. Search the best plugin for your store that will meet your requirements and just use it.