Looking for a php programmer to refine Wordpress

The first task. Tidy up a simple representational Wordpress site. After the transfer from another server, the site does not work correctly, the links do not work, the admin panel is shown crookedly.
The second task. This is the site of a chain of stores, which publishes short announcements about promotions and receipts. It is necessary to develop a plugin according to which it will be possible to upload an Excel file with this information to the site, it will be automatically distributed to the necessary sections of the site and announcements will be published according to the schedule also drawn up in this file. The purpose of this task is to reduce the labor costs of working with the site. A person only records information on Excel, uploads to the site, the rest is done by the program.