It depends on what was written in Metatrader journal (which error number for example).
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If you need to fill Community tab of Metatrader so use your forum login and forum password.
Your login is flaviussbera and your password is the forum native password.
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Same issue here. Out of nothing it stopped working..
Edit:
Mm it seems my VPS is blocked by MQL5? Can't visit www.mql5.com website as well.. 403 error.
This is summary blog post about error 403 describing almost all the reasons and about what to do for example:
Summary: Installation Failed - Error 403 and more
Summary: Installation Failed - Error 403 and more
- www.mql5.com
Many traders are using MQL5 VPS , and this VPS is having a lot of advantadges, for example - the traders do not lose activations when they migrate/synhronize their MT4/MT5 environment to MQL5

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Hi, can everybody tell me how to resolve this insue? I update my profile and password , I am using my personal EA but in very short time I receive the authorization failed. WHY?