Family photos encrypted by ransomware - Help needed ASAP!

Hi there,
Is anyone able to help me please? I have just looked at my external Terramaster drive for photos of my Mom but all files on there have a new extension (.LOCK3D) and every folder also contains a 'readme.txt' file which states that all my files have been locked and I am to follow their instructions to send money. I am really distraught because I wanted some photos of my Mom to put into her coffin as she sadly passed away from cancer 2 weeks ago, and her funeral is next week! I cannot believe the year I've had... my best friend passed away from Covid in January and after winning a court case to get back £5500 from an airline company who refused my refund, they never paid me and it cannot be enforced because they have stopped operating in the UK and now I get this!! The ransom instructions demand I buy Bitcoins to the value of £2000 and send it to another Bitcoin address. If I don't do this in 4 days the payment increases to £4000!! I really cannot afford to send anything as although I work full-time, I have two very young children to provide for. I have tried to find information online about this but google comes up with nothing other than to try well known antivirus companies that also deal with 'ransomware.' I have had no luck with them either. Can anyone out there PLEASE help me? I am a total wreck atm.
Thank you in advance.
Replies
(except air quality and Medical Science
https://malwaretips.com/blogs/remove-locked-ransomware-virus/
I think some of the answers above are thinking you have ransonware on your PC, but it is almost certainly running on the Terramaster NAS under the TOS system (would be useful if you mentioned the device model) and therefore most of the above methods aren't of much use.
I'm guessing you don't have any of this data backed up elsewhere as the simplest thing to do is factory reset the Terramaster, and upgrade to latest TOS version.
The malware is still on your device so it is important to disconnect it from the internet as soon as possible to prevent it spreading any further. Probably best to power it off for now and await a possible solution in the future if you don't want to wipe it.
There is currently no fix for this, there is a lot of chatter on the Terramaster forums but so far nobody has come up with a decryption method.
https://forum.terra-master.com/en/viewtopic.php?f=6&t=3940
https://forum.terra-master.com/en/viewtopic.php?f=6&t=2877
Discounts, coupons and cashback:
2019 = £1,443.52
2020 = £1,191,76
However he is quite knowledgeable about the software that is out there and could possibly suggest ways to get them back.
He does reply to questions.
He has his own software too which he shows himself using but he doesn't hard sell .
Without the decryption key it will remain encrypted.