Step 1: Go to Google Developers Console
Step 2: Select your Project
Step 3: Click the [ Product & Service] menu icon then click [ API Manager ] menu.
Step 4: Search [Google Search Console API], then click the [Google Search Console API] link.
Click the [Enable API] button.
Step 5: Go to the InfiniteWP admin panel and click the [ Settings ] section. Select the [ Google ] services tab. Click the [ Grant Access ] button in the Connect your Google Webmasters Account section.
Step 6: Click [ Allow ] button.
Step 7: Congratulations you have now successfully synced your Google Webmasters account with infiniteWP!