I have been casting Tiger shells today and now with 5 seeds left, 25 mins to go before the tiger shells leave the premium shop , it seems I can't buy any gold - is this another glitch from the payment system or are the lemon sharks suddenly even more elusive than ever when you want to achieve sea change?

too late

Wisteria, you need to provide more information for us to understand what problem you may be encountering. Are you having problems trying to donate? Are you donating through Gambit or Sparechange? Which payment option are you trying to use that isn't working?
Lemonsharks are elusive plants and it can take about 15 or more lettucefish sometimes before one will surface.

Wisteria, since a bug caused you to be unable to purchase the seeds, I can manually make the purchase for you. If you could please give more information, as Luna said, we'll try to get this solved.

I have previously used Sparechange and Gambit, when Sparechange failed. Neither will accept my credit card now and please be assured this is Not a problem with my credit card.

many thanks and kind regards

PS I do appreciate the lemonfish is elusive and that this is just a game :)