MemberPress Renewal update

We are small association using MemberPress on our WP site for past three years. Need to update MemberPress member annual renewal functionality. Not sure it is working properly. No set-up or installation required. Only needs update. We have a very limited budget but would like to work with someone on an ongoing basis for other less pressing needs. Please do not reply or respond if you do not have experience working with MemberPress. Thank you. The site is www.protectivesecuritycouncil.com.