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Hello,

Thanks for reaching out.

Please be so kind as to check the following support thread for more information regarding Twitter:
Important Note: Stay Connected to Twitter via Blog2Social (Changes to Twitter)

Followed your guide foa API key etc. Created one and the secret key. No problem with that. But I cannot connect my Twitter Profile, the Manage API Key field is grayed/Smart, non-clickable, same for the Connect My Profile field,

You have to pay for “Smart”.

Hello,

Thanks for your feedback.

Given the complexity of implementing a unique Twitter API per user, which requires detailed instructions and support we started rolling out this feature with the focus on prioritizing our Premium customer first. We will keep you updated when this feature will be available for all Blog2Social users.

Please let me know if you have any other questions.

It’s ok. I’m using now dlvr. It’s free and works without API-Keys.

Thanks for your patience.

We released version 7.3.0 of Blog2Social yesterday. Please be so kind as to update your Blog2Social plugin and follow the steps within this guide to connect your Twitter profile:
How do I connect Blog2Social with my Twitter profile?