Error undelegating... Could you help me?

Hi,
I didn't touch this account very much since before the transition to Hive.

Previously, I had from HP delegated to different users and more than a year after, the delegations are still in place.

I tried to use the Peakd wallet to undelegate, but every time I try, I get the error "Expected version 128, instead got 149"

I assume that it has to do with the changes in the protocol since the Steemit times, BUT how can undelegate this Hive Power?

Cheers