eBay

I'm getting messages from foreign buyers telling me I won't sell to their country, as far as I know ebay lets me sell to all countries?????

I get pop-up stating store using substantial memory, makes store operate in super slow motion, evidently storing "everything" even though I clear history after every use. I'm almost computer illiterate, evidently don't know how to clear everything I ...

Ebay store working dead dead slow. Message pops up saying "this web page is using significant memory". I am not literate enough to know what the problem is or how to remove it. Evidently ebay storing everything I ever looked up, bought, conversations...

When I click on "buy" a blue box appears surrounding buy area, then I can not proceed with the purchase. Automated help merely tell me to check my payment set-up, it is intact.

Ebay ask me to add additional item specifics to 4 items, I go to that page to add, won't scroll down to let me add more specifics ???