As an experienced and dedicated Odoo developer with 5 years of industry experience, I have dealt with a wide range of projects, handling various Odoo ERP applications. This included multiple instances where Odoo screens seemed blank post module installation, just like your current situation. And I pride myself on my ability to pinpoint and solve such issues rapidly - because most often than not, they are indeed small things.
Furthermore, I have worked on a variety of modules including Sales, CRM, Inventory, Accounting, HR, MRP, Repair, Helpdesk, Fleet and Website which attests to the depth of my understanding and expertise with all complexities of the system that Odoo has to offer.
I am also a firm believer in client satisfaction and producing high-quality work. Thus I can ensure that entrusting me with your project would lead to timely and effective resolution of the issue at hand. Let's fix this problem straightaway so you can manage your PrestaShop in Odoo without any hitches. Give me a chance and I won't let you down!