7.5.0 is broken, it's better if you use the last version.
Im still using that version and as of now im still recieving and not having any problem would you mind telling me if how long it will be okay i already got 6k Mrai inside my wallet and i dont want to messed up or lose it if i will going to upgrade, i just need some info whether its needed to update or not.
Upgrading to a new version will not too long. Just backup your seed then uninstall raiblock client then install the latest raiblock and you're good to go with the latest build.