Links automatically inserted into content is a result of Insert. Insert looks for keywords that are related to the category of your site and "inserts" an affiliate link into that word.
You can tone down or turn off Insert by following the instructions below. Note that changes to Insert can take up to 24 hours to fully take effect.
Access your settings, found here:
Scroll halfway down the page to find the Insert panel:
To tone Insert down, click the slider and drag it to the left:
To disable Insert entirely, click the toggle button on the top right of the panel. (It will make no difference where the slider is positioned):
Again, remember that changes to Insert can take up to 24 hours to fully take effect. If you have disabled Insert on your site, and you continue to see links inserted a full day later, email firstname.lastname@example.org