Can't Login to admincp and user account

[fxdigi-cash]

I have a persistent issue with attempting to login to both user account as well as Admin cp. I found similar issue someone had https://vborg.vbsupport.ru/showthrea...=287312&page=2, but didn't find good solution to this problem.

I did these steps many times, but nothing worked for me... I use vb.4.2.2 pl1
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1- clear browser cache, but still get this issue whenever I try to login after 15 minutes and more " Wrong username or password. You have used up your failed login quota! Please wait 15 minutes before trying again. Don't forget that the password is case sensitive. Forgotten your password? Click here[color=Red]!"

2- used tools.php and executed the query TRUNCATE strikes;

3- reset the cache

and repeated the same steps on and one, but nothing worked...!!

any idea??