MakeMKV ceased to work and doesn't recognize the activation key

[jlpicarduss1701e]

I am sorry to be a party pooper, but MakeMKV 1.14.5 has given up on me for decrypting Blu-Rays.
I did insert the current activation key as per instructions, but now it won't work anymore and says that I am using an old version of the program, when in reality it is in fact the current version available.
Besides, when I try to register the program, the pop window shows up all garbled. That's to say that two tabs for "Register" and "Close" come up so tiny that one can barely read what's on them.
But still, when I try to register the program, suddenly the program shuts down.
I have also tried to buy a full registered key but my Bank refused the charge.
I would like to continue to use the program, since when it did work, it was one of the fastest Blu-Ray decrypter I have ever known and I am enthusiastic about it.
Could anyone help me out please?