i have this pretty old ups of rahimafrooz of 800VA. just a few months back i replaced it's batteries & it was doing fantastic until now. what happened is my ups seems to receive electricity from the main socket in the wall via a wire. and i also got a multi plug in accordance with my ups where all my items were connected to that multi & it was then connected to the ups & therefore even when electricity went i could use all my things.
but now the problem seems that only the ups is receiving electricity & other equipments can't connect via the ups other lines. to clarify it more i am attaching a pic here.

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as u can see i have mentioned the lines in the pic. the ones on the left are the problem creators. please help.