Peptigram is no longer supported. I left the lab where I develloped Peptigram at the beginning of my PhD a few years ago. No time or ressources was dedicated to maintain it. Even if I had now the time and money to fix Peptigram I would work on a new version. I learned a lot as a bioinformatician and programmer since and even if it served its purpose, it is effectively dead. I have some ideas to make a second version of Peptigram but I can only work on it during my free time as a hobby.
I hope you understand, sorrry for the unconvenience, I also wish Peptigram would still be alive and could have been improved.