Has anyone found solution for SYNOLOGY SYNOLOCKER ?

I agree, don't bother paying as they don't unlock, however I have seen scenarios where the lock screen comes up but the data hasn't actually been encrypted and booting off a CD or USB can allow you to see the data

for prevention you can monitor the cpu load of the synology with a monitoring solution. while the encryption progress is running there is a high cpu load on the synology. if so just pull out the power cable to save as much data as possible. then you can recover the unencrypted data by booting a CD or USB as said by wolfcamel

Indeed, there is no solution.  

This is the solution that I used to get my synology up and running

Here is how you do it:
1. Shut down the NAS
2. Remove all the hard drives from the NAS
3. Find a spare hard drive that you will not mind wiping and insert it into the NAS
4. Use Synology Assistant to find the NAS and install the latest DSM onto this spare hard drive (use the latest DSM_file.pat from Synology)
5. When the DSM is fully running on this spare hard drive, shut down the NAS from the web management console.
6. Remove the spare drive and insert ALL your original drives.
7. Power up the NAS and wait patiently. If all goes well after about a minute you will hear a long beep and the NAS will come online.
8. Use Synology Assistant to find the NAS. It should now be visible with the status "migratable".
9. From Synology Assistant choose to install DSM to the NAS, use the same file you used in step 4 and specify the same name and IP address as it was before the crash.
10. Because the NAS is recognized as "migratable", the DSM installation will NOT wipe out the data on either the system partition nor the data partition.
11. After a few minutes, the installation will finish and you will be able to log in to your NAS with your original credentials.