There are several users having the issue of Gmail not receiving emails with attachments. If you are the one facing same issue then you need to double check the Gmail filter settings. To check the Gmail filter settings, start by opening Gmail account and then tap on gear icon at the top-right corner of the screen to proceed to settings option. Now, click on see all settings and then proceed to filters and blocked addresses. Lastly, look through the email addresses that you want to block or create filters for. Unblock or unfilter the email address for which you want to receive emails from.