bp-social theme unable to save customized colors

We have been operating website unityconnect.org for several years without trouble. Recently we needed to move site to a new server and all is working except that all custom setting are not working although they show as active in customizer and I can no longer change the colors in the customizer and have them stay. Am I missing something?

wp version 4.7.3
php version 7.0
buddypress version 2.8.2
bp-social version 1.3.7.2