How do i submit a claim using payflex mobile? Download PayFlex Mobile ® from your app store to submit a claim using your smartphone or tablet. If you suspect fraudulent activity on your account or believe you received a phishing email, contact Account Security.How does payflex work? At PayFlex, we go beyond traditional health care accounts. Employer-sponsored incentives and rewards help boost household budgets with more ways to pay for eligible products and services. Have you heard about this? Check out the PayFlex Inpidual HSA and see how much you could save .How do i contact paychex flex support? You can also call 833-299-0168 for additional support options. Where can I log in to my account? Where can I log in to my account? Visit our login page to access Paychex Flex as well as our other Paychex systems, whether you are an administrator, business owner, employee, accountant, or financial advisor.Why has my payflex account been locked? For security reasons, we locked your online account. To resolve, call us at 1-855-542-6183 (TTY:711). You’ve entered an incorrect username or password. Please try again. If you’re covered by an HSA-compatible health plan, you may be eligible to open a PayFlex Inpidual HSA. Download the PayFlex Mobile® app today.