S2 member form with donation

I’ve been using s2member for quite a few years. I have a client that needs a form that includes a donation (member adds $ amount) that is then added to their membership fee before checkout. Problem is your recommended solution uses EZphp which is no longer a functioning plugin. It was something used years ago. Is there a new version of “how to” accomplish this? If not, I’ll unfortunately have to go to another membership plugin.

Thanks.

no one??? it’s been 5 days is there anyone that can help with this?