no file walet.dat , and i changed all the files and folders to your downloaded link, sync got stuck on 77.25%
You dont need just "change" it, you have to delete everything except wallet.dat fromLux folder (make sure that u have enough backups of wallet.dat, you can find few inLux/backups folder before deleting), than download LUXblockChain.zip (see link in guide) and unzip it inLux, run Qt wallet. You should be good by following that steps.
In case if issue still occur try to use a previous wallet verision, 5.3.2 is in the same blockchain as 5.3.2.1.