You can edit your Company Logo and Information from your company page.
Access your company page by following the steps below:
1. Click on your profile icon in the upper-right-hand corner
2. Select 'Account Settings'
3. Select 'Manage my Company' and select your company
4. You can edit your information and logo by selecting any area directly
Recommended size for logo: 128x 128 px
If you are still having trouble, contact the Wantedly Customer Relations Team here!