iProcess is capable of sending DMARC compliant email because they support custom SPF configurations that achieve DMARC alignment. iProcess is a Mobile Payments Platform and is often used by Application Development and Product teams.
A commonly used include for iProcess seems to be 'include:_spf.safewebservices.com', however that seems to pull in a lot more than what you need in your SPF. Most traffic from iProcess seems to be coming from 'mta0.ops.safewebservices.com', which for the time being translates to 'ip4:104.192.32.80' for your SPF. In any case, it's best to contact iProcess and verify this information.