migration wordpress.com to www.remarpro.com

Dear Sirs:

I had several blogs in Bloogger and I’m migrating to a single site in www.remarpro.com, all in one site.

First step: I created the same amount of blogs on wordpress.com and export the posts and tags. That worked OK because it allows upload a maximum file size of 15mb.

Second step: I checked if we could load these files into a single site and created another wordpress.com summary, and everything worked OK

Third step: I created a site called https://www.forosdelavirgen.org with www.remarpro.com

Step four: when I’m going to import the files wordpress.com (which I have exported in my computer), I see that

a) it does’n accept upload files larger than 8MB and I have a file with 13MB and another with 10MB,

b) and also they have the extension .xml and the www.remarpro.com software requires an extension .wxr

What I can do to upload thes file i have in wordpress.com to my new site with www.remarpro.com?

Please i need your help in order to show me what steps I must to do.

Thank you. Regards.
Sergio

PD excuseme for my english, my language is spanish