Here you can see the difference:

https://en.wikipedia.org/wiki/Volcanic_Explosivity_Index

https://es.wikipedia.org/wiki/%C3%8Dndice_de_explosividad_volc%C3%A1nica

Which is the real category of the current Cumbre Vieja eruption?

维基百科西班牙词条说11月20日火山爆发指数从2提高到3。原因是加那利群岛火山应急计划(PEVOLCA)认为11月20日火山碎屑的排放量超过了1000万立方米。< / p >

The volcano of La Palma, which erupted 61 days ago in Cumbre Vieja, has exceeded the emission of 10 million cubic meters of pyroclasts, for which the scientific committee of the Canary Islands Volcanic Emergencies Plan (Pevolca) has raised its rate of explosiveness from 2 to 3, on a scale of 8.

Source: lainformacion.com

I guess there was a mistake in english wikipedia entry when you posted the question as now it can be read:

For its first two months, the eruption was assigned a rating on the Volcanic Explosivity Index (VEI) of VEI 2 (on a scale of 8). On 20 November 2021, the scientific committee of the Canary Islands Volcanic Emergency Plan (Pevolca) raised the rating from VEI 2 to VEI 3. Though in modern eruptions where it can be measured, eruption column height is often seen as a more accurate measure, in this case the change was based on the 10 million cubic metres of ejected material measure alone. The VEI rating was increased despite no change in the eruptive mechanism or explosiveness.

Source: wikipedia