White spots after sealing patio

Hi ....the white spots you describe are likely to be effervescent staining which is salt being pulled up from the Subase or potentially the mortar which has been used . The paving should really have been left until this process had naturally stopped ,something which I explain to customers , and should not have been sealed . The sealant you've used needs stripping back off using a good quality stone cleaner then leaving for at least 3 months before resealing. The stone won't be damaged so no need to worry it's a common mistake I see all the time .

If you use easy seal in the yellow tub you must remove all excess seal off the. pavers or it goes milky white easy solve get a remover and reseal.