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Would you mind provide me FTP access? and backend access please? I cant login to backend right now, after I fill username and password I always get blank page.
I installed eXtplorer on your joomla, since FTP cant be used.
well, I suggest you contact Joomla template developer shaper_helix3, because this issue is coming from their code. which is not using full url source address for the logo image, so it may broken on some page.