I activated my theme and tried importing the content. After a long time, the import was finished with a few errors such as:
New AJAX call! [ERROR] Failed to import “Protection concept: Shield With Keyhole and Security on keyboard” (Media) [ERROR] Failed to import “2aa-1-350×233” (Media) [ERROR] Failed to import “bg-security-350×233” (Media) [ERROR] Failed to import “IMG_0682-350×233” (Media) [ERROR] Failed to import “hmo5vqdrghsgkmsr68sl-350×233” (Media) [ERROR] Failed to import “banner-350×233” (Media)