Change bank account for IVA devolution deposit

Currently, my IVA refunds get deposited directly to my Pichincha account. However, I will be closing my account at Pichincha soon due to the new and excessively long time for US checks to be credited (24-28 days). I have opened a Banco Guayaquil account (14-15 days to clear), however, I have not been able to figure out how to change the account on the SRI website. I went to SRI, but the agent here (I live in La Libertad) told me I have to do it online and was not too helpful. Any help would be appreciated,

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