Backup your wallet data file and save in other safe place -other folder, USB drive, etc.-. see location bellow

The default installation folders and files of Commercium wallet coin is similar to almost all

If default installation you find it in 

C:\Users\YourUser\Appdata\Roaming\Commerciummw

and is called wallet.dat

Unzip all the folders and files provided in Blockchain_Commercium_ltisa_20201207_0603amUTC-3.zip

in a temporary directory you choose

We provided the folders blocks and chainstate with all the blocks and the structure of the Commercium Blockchain at this moment

Copy and replace all the same folders that are located at

C:\Users\YourUser\Appdata\Roaming\Commerciummw
with what we provided and you unzipped

( for example: you can delete the folders blocks and chainstate, then unzip blocks and chainstate from the zip file under 

C:\Users\YourUser\Appdata\Roaming\Commerciummw)

After the end of copy and replace

run your GUI Commercium wallet (commercium-qt.exe) and wait until full synchronization of your wallet at the present 

Be patient until blockchain is upload in memory and/or your swap file (a few min)

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If you need:

download Commercium wallet at https://www.commercium.net/wallet

More info: https://www.commercium.net/

run commercium-qt.exe until it generates the folder

C:\Users\YourUser\Appdata\Roaming\Commerciummw

Close your GUI wallet 

Backup your wallet.dat file to other safe media but keep the original generated there

If you are disappointed with the crypto coin blockchain you paid for, 
you can claim for a re-fund of your payment.

We apologize for your time lost.
Just email us and we will process a return of your funds.