Hi and welcome.
You don't need aida64 to control your fans btw, connect them to aquaero and they will be available as fans. I recommend setting up a curve controller based on the coolant temp, but you can use fixed settings as well.
I have not used aida64 for some years and I do not remember if you have to activate shared memory. If it does require activation, do so.
Aquasuite requires you activate 'Background service' from the 'Service' tab {
service.jpg}
Aida64 should then list in the 'Data quick view' tab under 'Data from Aqua Computer service' {
data.jpg}
If you see aida64 listed, then you can use sensors from it as a source for your fan controls.