Hebrew Characters Not Supported - UTF8???

Dear All

I am trying to integrate the WordPress Memebership Plugin into a Hebrew Website.

Translation is working OK, and translated strings are shown in Herbew as expected.

When trying to name a subscription level, for example, in Hebrew, I get questions marks (???????) instead (after saving).

So far I did:
(1) Verify that in wp-config.php DB_Charset is utf8 and DB_Collation is utf8_genereal_ci
(2) changed the collation of of membership plugin tables on my database from latin1_swedish_ci to utf8_general_ci
(3) tried both renaming existing level as well as creating a new level

Hebrew still doesn't work !!!

Could you kindly support?

Many thanks !

Sharon