First: Why are you using macdrive? You don't need it! Format the SSD in ExFat it works great!
Second: Even if you format you will not loose the information on the SSD (or any hardrive). You will loose if you write again on them...
My recommendation is trying again macdrive (the latest version), even in trial.... just to see what happens. If that does not work, try to fid a MAC. If even with that does not work, you can recover the ssd with a lot of softwares. I recommend this ones:
http://www.r-studio.com/ or ReclaiMe File Recovery Ultimate (i love this one for its simplicity, and they even have a FREE raid recover)
Best,
JDS