I use Magento M2.3.0 and module M2 Pre Order v1.1.4. However, the Pre Order button doesn't show in the landing page.
I find it due to the conflict between BSS Pre Order with module Plazathemes_Pricecountdown installed on our site.
May you please help to fix it?
To solve this, you could customize js of BSS Pre Order to fix the conflict with module Plazathemes_Pricecountdown product block the file:
Please download the attached file below and overwrite the current file on your site.