I've never edited those files ever since so I thought everything is alright. The weird thing is that all the other wallets are working fine just this one which contains some decent amount of money lol. i wrote to MEW last night and they are saying that the file might be corrupt and they can't really help with anything more.
Have you ever log in with your JSON file before?
It was happened to me before. I send my problem to MEW costumer service
Its just say:
Hi Chuck Guy,
Thank you for reaching out to us.
We are constantly working to make our services better. With the release of our new interface, a couple of small fixes were necessary. We have released many of these already, but you may need to perform a hard refresh to reload the version of our site you're using.
Please perform a hard refresh by pressing CTRL+F5 or CTRL+Shift+R.
If you're using a Mac, use COMMAND+Shift+R or hold down the shift key and click the refresh button.
Semaja M
#MEWforceSorry I cant send the Picture, may be it will help you. If that cant work maybe your JSON filw get corrupt. Im sorry.
Sorry to hear you also went through a similar situation, but were they able to sort it out for you finally. One thing that I really don't get is I have accessed this file a couple of times just that it's been like 4-6 months ago and all of a sudden I can't log in. My keys are not saved on any online pc and I only use them on a different computer which I don't do any crypto-related activity with it unless I am accessing MEW.