We are sorry for the problem.
For further analysis, we suggest you send us the 'easeus.log' and 'TbLogsysClient.tblog'. You can find them under 'bin' folder in the installation directory of our product.
In addition, we suggest you don't set 'Compression' and 'Priority' option in our product to have a try and tell us the result. If you still can't solve this problem, please confirm that you backup your data to network or local directory, if you didn't backup your data to local directory, we suggest you try to backup your data to local directory and tell us the result.
EASEUS Support Team O
EASEUS Customer Support Center: