1. I Can't Access/Login To A Member Area...

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Both email and password are CAsESENsitiVE so
Abc.Def@domain.com is not the same as
abc.def@domain.com
+
ABCDEF (CORRECT)
is not the same as
abcdef (wrong)

Accurate Copy & Paste works =
Password must be only 6 "dots" in the password box.
Don't leave any empty spaces anywhere

IF it won't budge then try to TYPE / KEY IN your password using your keyboard.
Remember CAPS Lock (capital letters only) and only 6 "dots"