Er y gellir priodoli hyn yn rhannol i effeithiau COVID-19, mae masnachwyr, cludwyr a’r porthladdoedd wedi adrodd ei bod bellach yn fwy costus, llafurus ac mae’r risg yn  uwch i lywio’r prosesau newydd sydd eu hangen i groesi’r ffin rhwng Cymru ac Iwerddon. Nid problemau cychwynnol yn unig yw’r rhain, ond materion craidd gyda’r rheolau a’r prosesau newydd sydd wedi’u sefydlu ers hynny.
Whilst this can be partially attributed to Covid-19 impacts, traders, hauliers and the ports have reported that it is now more costly, time-consuming and higher risk to navigate the new processes required to cross the border between Wales and Ireland. These are not simply teething problems, but core issues with the new rules and processes that have been established since.