@liv86 My guess would be that the reason it has stopped working is that maybe / probably Collection Manager has the same issues that KUAL had after 17th of April: the developer.keystore used to sign it (KUAL) has expired on that particular date.
https://bitbucket.org/NiLuJe/ktcolle...gr/src/master/
KUAL being much more widely used by people here on MobileRead has already been updated. Collection Manager apparently wasn't
You could maybe try asking @NiLuJe if he can release a new version of Collection Manager since @ixtab hasn't been around this forum for ages.
As for getting KUAL to work: you'll need to update both DevCert/mkk (since jailbreaks & old hotfixes haven't been updated with new developer.keystore) and KUAL itself.
Read this:
https://www.mobileread.com/forums/sh...postcount=1295
And download KUAL (the non-"coplate" version should be used for your old firmware) from here:
https://www.mobileread.com/forums/sh...44&postcount=1