Yeah, the QHY SDK does come with the correct FXLOAD, however the QHY SDK installs the support files in a separate location than where INDI stores the drivers.
I do not recommend you install the QHY SDK over the INDI installs, it screws up the locations of driver files.
I ALWAYS use the INDI drivers and compile the FX3LOAD myself after.
I wish we could include the FX3LOAD in the INDI drivers, however FX3LOAD is an OS specific file. We do not like to overwrite any system file from INDI.
I keep a copy of FX3LOAD handy and put it in when needed.
Just be aware, it's an OS distribution problem, Ubuntu is using such an old version of FXload and I have complained many times, but nothing gets done about it.