There are different ways to install Magento 2 module
Install Magento 2 Extension via the Composer
This installation method is the preferred method for cobby.
cobby source code hosted on github
Run the commands in the Magento 2 directory via CLI
composer require "mash2/cobby-magento2"
php bin/magento module:enable Mash2_Cobby
php bin/magento setup:upgrade
Install Magento 2 Extension from Archive
Unpack the Extension ZIP file on your computer.
Connect to your website source folder with SSH/SFTP/FTP clientand upload all the files and folders from the extension packageto the corresponding root folder of your Magento installation:Please use the Merge upload mode. Do not replace the whole folders, but merge them. This way your SSH/SFTP/FTP client will only add new files. This mode is used by default by most of SSH/SFTP/FTP clients software. For MacOS it’s recommended to use Transmit or Cyberduck.
Run the commands in the Magento 2 directory via CLI
php bin/magento module:enable Mash2_Cobby
php bin/magento setup:upgrade
cobby is now installed and needs to be configured.
Configuration
cobby authenticates to your Magento Installation via a user account. It is best practice to create a dedicated user for cobby.
create a dedicated User Role for cobby:
navigate to System –> User Roles

click on Add New Role
set Role Name to cobby-role, enter your password under Current User Identity Verification, then switch to Role Resources
under Resources select cobby

click on SAVE ROLE
2. Create a user for cobby and assign the role we have created in
Navigate to the user management: System –> All Users

create a new user by clicking.
Add New User
fill in all required fields under User-Info and enter your password under Current User Identity Verification. Note down the User Name and Password, we need those later.
switch to User Role.
Tick your new created cobby-role.

click on SAVE USER and proceed with step 3.
3. configure the cobby settings
navigate to Stores –> Configuration

—> Services: cobby

Under General Settings fill the fields User Name and API Key with the information from step 2.3
License key: is already filled out with your license key for this cobby
(Note: There is a difference when installing via Archive and Composer. If Composer was used, you must enter the data yourself.
We send the license key in the demo e-mail. This key has to be copied out during the installation, because it is not automatically prefilled in Magento 2.)
installationContact Email: is already filled with your Email address. cobby will inform you of notifications, errors and updates through this address.
User Name: the User Name of the user you created in 2.
API key: the Password of that user

click on SAVE CONFIG. The cobby service will now be set up this may take some time, you’ll receive an email to your Contact Email once the service is set up. The email will provide you with an install link to the cobby Excel AddIn.