Termbase doesn't seem to be recognised

Hello everyone,

I recently created my first termbase but am having some difficulties with it:
1. It is open but the preview window tells me it is closed.
2. When I add a term it takes it but the new terms do not appear in the list on the left hand side, they did orginally but now I can see only one term.
3. When I am translating I get suggestions for the terms I have added, but only sometimes and only for some terms.

Any suggestions?

Best regards
Marisa