You're probably right about the non-existence of parishes in Spain. However the full title was "orthodox Church of Spain, Portugal and Brazil". The problems started around the 2000 when Metropolitan Joao of Lisbon made a pilgrimage to the Holy Land without having authorization from Metropolitan Sava of Poland. Soon after that, Metropolitan Joao excommunicated some nuns in Portugal. Metropolitan Sava interfered in favour of the nuns and allowed them to enter a Serbian monastery in France. This angered Metropolitan Joao, who thought his authority was not being respected. The Portuguese clergy and the Polish Church could not get along again and the Polish Church withdrew its support to the Portuguese clergy.
After the Polish Church removed its protection from Joao, only the Brazilian Bishops Chrysostomos and Amvrosios continued to be part of the Church of Poland. The majority of the clergy in Brazil decided to leave Poland's jurisdiction and enter the Ukrainian Orthodox Church of USA and the Diaspora. However, Metropolitan Sava of Poland refused to approve their request because he did not recognize the canonicity of the UOC-USA as long as it remained under the Ecumenical Patriarchate. It's for this reason that they were received by the Serbian Patriarchate.
From what I know, the Portuguese clergy are not part of any official Church, but I might be wrong. The logical thing for them would be to request union with the Ecumenical Patriarch, as the pro-Moscow Churches will most likely not receive them.