Hi Fadimahar,
DA increase is very much depending on the quality of the Domains you are linking:
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No-follow links do not improve DA
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Do-Follow links will improve DA
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Avoid spam score higher than 5. You can check it with MOZ. (Your domain has already a spam score of 7)
Second influence is the DA of the linking Domain itself. If the DA of the linking Domain is low it will have only a minor influence on your DA.
Keep in mind that search engines need to find your new links and this takes some time. My experience is 8-12 weeks until you can see them poping up. You can accellerate this by sending a PING. One source I`m using is prepostseo.
Regards
Gerald
