and he assures me CP is very keen to continue development, and is currently prioritising a number of features requested by users.
The only thing he's keen on is receiving the monthly payments from us, so that he can pay his mortgage while he works on other things.
I've seen this happen before with window cleaning software, CleanerPlanner has begun it's slow and painful death spiral.
I could understand it with Window Cleaner Pro because there was no monthly fee, hence no incentive to keep up, but charging a monthly fee (and so getting a continuous income stream) from CP AND letting customers down with an increasingly unreliable and substandard product is just unacceptable IMO.
It could be the way the software is structured, it's just not properly scalable and so more users will make it ever slower and there's nothing that can be done without re-writing the whole thing completely. (fat chance of that).