Cant install seo extension

Cant install seo extension

Hi,

I've purchased the extension SEO Toolkit for Magento 2 Community and tried to install it via composer. I get this error

​composer require amasty/module-seo-toolkit

Warning from https://repo.packagist.org: Support for Composer 1 is deprecated and some packages will not be available. You should upgrade to Composer 2. See https://blog.packagist.com/deprecating-composer-1-support/


In InitCommand.php line 799:

                                                                                                                                                                                                                      

  Could not find a matching version of package amasty/module-seo-toolkit. Check the package spelling, your version constraint and that the package is available in a stability which matches your minimum-stability   

  (stable).