Shop is buggy as hell...

Since 3 days, i am nearly not able to browse the shop. "There has been an error processing your request" comes every 2nd time i try to open a product or add it to the cart.
Checking out is like a lottery... sometimes it deletes all of the products, and sometimes, the order cant be placed.
when finally a order is completed and i load the DIM, it takes hours just to download a 20 MB file...
I dont know what happend, DAZ Store and installation have been very fast and stable before. but like that, i wont be abl to use it anymore, cause it takes hours just to buy and download one product.
does anybody have the same problems?