As @delta says, clubs will have specific and rigid rules on the experience level required to fly many "advanced" glass single seaters: sometimes driven by insurance requirements - so not flexible in any way at all.
They may for example required a certain number of solo hours in a lesser club glider and regardless of your experience elsewhere in gliding if you do not have that number of hours past experience in that lesser glider type in your logbook then you are not going to be permitted to fly the higher performance glider.